Antique
Solar & Mining Surveying Instruments

This is just a sample of the many antique surveying instruments we have sold.
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Most prices seen reflect actual sale results from this website.
Prices seen span a long period of time and may not reflect current values. Some are selling for more, many now sell for less.
On some pieces you will see no price, or a price range, with or without an explanation. The reasons for that are discussed on the FAQ page.

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Gurley #17 Engineer's Solar Transit w/ Burt Attachment   This Gurley #17 engineers solar transit is equipped with a factory and properly marked Burt Patent Solar Attachment. Solar transits are one of the most desirable and sought after of all surveying instruments to be found. They are graphic, historically important, rare, and represent an important aspect of surveying history.

This example is a #17 Engineers transit with a 11" scope and has a large and commanding presence that will make for a great display piece. This transit has a 5" needle, and a 6" half vernier circle that reads to 20 degrees. It weighs close to 18 lbs. or almost twice what a similar looking but smaller light mountain or recon transit would weigh. The picture below on the right gives you an idea of just how large and commanding this transit is compared to a recon size Gurley transit. 

This instrument is in very nice overall condition. It dates from before 1908 as there is no serial number when Gurley started to use them. It has a wonderful mellow patina.  The box is nice as well noting just some scuffing on the exterior.All motions and the screw are free. The compass works, and the silvered compass face is very nice. The optional / auxiliary side mount level is present.The adjusting tool and striding level are present and stored in the box. All bubbles are good. Also note that there are optional jointed magnifiers on each side to aid in reading the vernier scales.

The idea behind solar instruments, either transits or compasses, was that in certain areas the magnetic deviation was so great, and the errors it could cause so great, that these unusual and significant devices were developed as a way to compensate for this effect. The Burt Solar attachment was first Patented in the 1830's to be used on solar compasses. Gurley later bought the rights and offered this style attachment with their instruments. A solar instrument enabled the user to find a true reference or location using the horizon and the position of the sun instead of the standard method employing the compass. Even though the concept had been around and employed in seafaring navigation for centuries, very few of them were actually made for use in the field w/ transits or compasses.They are rare.

Each major surveying instrument maker made a transit that came equipped with one form or another of these devices. The best known names in the surveying instrument field were Gurley and Keuffel & Esser, but Berger, Buff, Dietzgen, Lietz, Sala, and others offered versions of a solar transit. Different attachments are typically known by the name of the inventor, and the examples designed and developed by Saegmuller, Smith, & Burt being the best known solar attachments. The Saegmuller and the Smith utilized secondary small scopes, while the Burt design more closely resembled a octant or sextant in design and used a peep site.

Gurley was located in Troy New York at this time, and their reputation for the manufacture of quality instruments was unsurpassed.  This Solar Transit is surely one of the most striking and graphic of forms of surveying instrument that are available not to mention one of the most avidly sought by collectors. Rarely seen or offered for sale in this large size, this transit is the piece that will move your collection to the head of the line. A super piece.

Good +   . . . . . . . $2750.00      SOLD!!

Young & Sons No. 10 Aluminum Transit w/ Smith Solar Attachment This is a rare Young solar transit with an unusual Smith Patent Telescopic Solar attachment. This transit is called off as No. 10 in an early Young catalogs. The patent for the solar attachment was first granted in 1880. This example is an improved model that was patented in 1902. The 8513 serial number on the compass face indicates it dates from shortly after the turn of the century.

It has a 4½" horizontal circle, a 4" silvered vertical circle, a 3.3" needle, and a 10" main telescope. The brass telescope on the Smith solar unit is 7" long, and is inscribed "Pat Sep 16, 1902." There is a counterweight that mounts on the standard opposite the side with the solar unit. All motions are free and move smoothly. The compass works as it should. Note that there is a vernier scale on the outside plate, and another under the glass.

Young's use of Aluminum for many of the different parts of the transit is very unusual for an instrument from this time period. Although quite a bit lighter than Brass it was also quite brittle and prone to crack. Its formulation had not yet been perfected to alleviate that problem. There has been a repair done to an aluminum part of the leveling head that can be seen from the bottom. A brass ring has been epoxied to the aluminum bell shaped housing part of the leveling head as it was cracked. That seems to have fixed the problem and it mounts to a tripod with no issues. The transit fits into the lift top box with the solar attachment in place. The box shows age but is OK. The proper tripod is available for an additional $200.00.

Good +  . . . . . . $          SOLD!!

W. & L. E. Gurley #30 Light Mountain Transit Equipped w/ Burt Solar Attachment & #161 Top Mount Auxiliary Mining Scope This Gurley Light Mountain Transit is set up to be used as either a Solar Transit or Mining transit.  It is in like new, hardly ever used condition. It is obvious that this instrument was not carried into or used in the the field. The finish on the box, and the condition of the outer leather carrying case are the nicest I have ever seen. The bronzed finish on the instrument itself, the scopes and other pieces is near flawless with just minor losses to high points and edges.

The serial number is 12987 which would date it from 1912. The original purchaser ordered bells and whistles for this transit that are rarely seen on one transit and make it a very rare and unusual instrument. The upper tangent lock plate is marked with the name Richard Marsh who I assume was the original purchaser. A Google search for that name turned up no historical info but references to several other people currently associated with surveying . A relative perhaps?   Inside the top of the box is a tag with the name Victor M. Vang of Idaho who was associated with the Merger Mines also in that state. Google found several references to him. 

In addition to the Burt Solar Attachment & #161 Auxiliary Mining Scope this transit is also equipped with a 4" full circle vertical vernier. It is protected buy the  special order Aluminum cover illustrated in Gurley catalogs from the era.. The compass needle is 4"  and operates properly. The silvered face of the compass is near perfect. All level vials are full and original although the small one under the standard is in a different finish for some reason . The opaque sun shields are present nice. The brass plumb bob is marked K & E. 

The vernier on the main plate is tight from near 100 years of sitting, but all other motions are free and operate properly. The auxiliary mining scope attaches by means of  two coupling nuts designed to mount it over, and precisely in line w/ the scope below. The Burt solar attachment is complete, and marked with the Gurley name as well.   The auxiliary level that mounts to the left side of the main frame is present, and also has a fitted place in the box to mount. There is also another auxiliary striding level with a fitted place in the box for use when setting up the instrument. The optics are good and the crosshairs in the main scope are 3 horizontal and one vertical. The crosshairs in the mining scope are a simple cross.

The extendable leg tripod looks like new with the brass fittings still retaining their bright shine and protective lacquer coating.  I have provided numerous pics of both the transit and the tripod, so please be sure to look over all of them 

This unusual form Gurley transit and accessories are a rare variation. With its original finish and patina this instrument will display very nicely and be the highlight of any instrument collection related to surveying and or mining. A super piece in super condition. Highly Recommended!!

Fine + . . . . . . .$4750.00      SOLD!

 






K & E / Keuffel & Esser # 5081 1/2 Engineers Mining Transit w/ Aux Scope & Attachments in Original Box  This is a very nice condition Engineer's Mining Transit. It is in near mint original condition. The black crinkle finish is 95% or better and near pristine noting just a few minor scuffs. It looks to have seen little use. All motions operate smoothly. The silvered compass face is flawless, and the 3 1/2" Gold compass needle swings north. Cross hairs are present in both scopes. 1 white plastic vernier scale cover is missing. NO other apologies.

The serial # 124,320 is found on the box, the horizontal plate of the instrument and is on the second scope as well. That dates this mining transit from 1952 according to the charts available at www.surveyhistory.org.The K & E marked loupe, plumb bob, oiler and more are all present. Note how the plumb bob comes apart and is made to hold a second tip. An unusual feature that is not seen very often.

Mining transits were developed for use in mines or places where the user would need to shoot a line where the plate would be in the way. The scope could be mounted on either the top over the main scope, or on the outboard side. The counterweight is also present.

This graphic, rare & desirable Mining related surveying instrument will display very nicely in a mining collection or a number of other collections. Very Nice!!

Fine +  . . . . . . $1250.00        SOLD!!

W. & L. E. Gurley #30 Light Mountain Transit Equipped w/ Burt Solar Attachment & Auxiliary Side Mount Mining Scope  This Gurley Light Mountain Transit is set up to be used as both a Solar and Mining transit. It is in nice used condition with the instrument and solar showing more wear than the aux. mining scope which looks to have seen little use at all.

There is no serial # dating it from prior to 1908. It is dated 1889 under the plate. It also has the makers initials and other info there. (see pics). The original purchaser ordered bells and whistles for this transit that are rarely seen on one transit and make it a very rare and unusual instrument. In addition to the Burt Solar Attachment & #161 Auxiliary Mining Scope this transit is also equipped with a 4" half circle vernier scale. The compass needle is 4" and operates properly. The silvered face of the compass is nice. All level vials are full. The opaque sun shields is present.

The auxiliary mining scope attaches using the large knurled thumbscrew on one side. On the opposite side the scope axle is threaded to accept a solid brass counterweight. The Burt solar attachment is marked Gurley. The optics are good and the crosshairs in the main scope are 3 horizontal and one vertical. The crosshairs in the mining scope are a simple cross. The extendable leg tripod looks good with a repair to one clamp.

This unusual form Gurley transit is a rare variation. This unusual instrument will display very nicely and be the highlight of any instrument collection related to surveying, mining or engineering. An unusual and super piece in nice overall condition. Recommended!!

Good + . . . . . $3495.00      SOLD!!

W. & L. E. Gurley Light Mountain Solar Transit w/ Burt Patent Solar Attachment in Original Box  This W. & L. E. Gurley Solar Transit is in nice overall condition. W. & L. E. Gurley was located in Troy New York and their reputation for the manufacture of quality surveying related instruments was unsurpassed. Having no serial # dates from before 1908. The bent standards indicate it dates from after 1880. Solar Transits are one of the most sought after and desirable of all surveying related devices ever developed or offered.They are very graphic and make for great display pieces.  

Solar instruments were developed for use in the field to facilitate finding ones location using the sun and horizon much as seamen would do with sextants or octants. Their use was made necessary where ore deposits would adversely affect the accuracy of a regular compass. Even though the concept has been around for many years very few of them were actually made for use in the field. The idea behind solar instruments was that in certain areas the magnetic deviation was so great and the errors it could cause so great that these unusual and significant devices were developed as a way to compensate for this effect. Their use enabled the user to find a true reference or location using the horizon and the position of the sun instead of the standard methods employing just the compass. 

All motions operate smoothly. The compass face is nice and the compass swings north. Cross hairs are present. There is no attachment point in the box for the attachment. Nor is there a striding level or the adjustment bar. The Burt attachment is clearly marked W. & L. E. Gurley. A metal carrying handle has been added to the box. It operates as intended and looks good. This W. & L. E. Gurley Solar Transit is one of the most striking and graphic of forms of surveying instrument that are available not to mention one of the most avidly sought. Rarely seen or offered for sale one of these instruments will move your collection to the head of the line.

Good   . . . . . . . $2250.00 w attachment       SOLD!!

Young & Sons # 10 Solar Transit with Smith Patent Telescopic Solar Attachment in Original Box  This rare c. 1913 Young Solar Transit with an unusual Smith Patent Telescopic Solar Attachment is in very nice overall condition.  It includes the box and a nicely refinished tripod. A graphic and commanding piece for display or addition to many collections.

Young solar transits are called off as model No. 10 in early Young catalogs. The patent for the Smith solar attachment was first granted in 1880. This solar transit carries an improved model solar attachment that was re-issued a patent in 1902 and is so stamped. The 8484 serial number on the face of the compass on the transit dates it from shortly after the turn of the century.

Young's use of Aluminum for many of the different parts of the solar transit is very unusual for an instrument from this time period. The transit has a 4½" horizontal circle, a 4" silvered vertical circle, a 3.3" needle, and a 10" main telescope. The telescope on the Smith solar unit is 7" long, and is inscribed "Pat Sep 16, 1902."  All motions are free and move smoothly. The optics are clean and clear and it has 3 horizontal and 1 vertical crosshair. The compass swings to north, and the needle lock works as it should. Note that there is a vernier scale on the outside plate, and another under the glass. The different scales are all silvered w/ tarnish. The transit fits into the lift top box with the solar attachment in place. The box shows its age but is OK. The tripod is included in the price.

Fine   . . . . . . $2850.00     SOLD!!

Breithaupt / Kassel Mining Suspension Theodolite in Box   This unusual instrument is NOS never been used. It appears it was sold through K & E and dates from the 70's. There is a translated set of instructions for use and a K & E bulletin announcing their carrying the product is included. Basically it is a theodolite designed to be hung upside down from preset points installed in mines or tunnels.

I found another in a collection with a good description http://www.sage.unsw.edu.au/currentstudents/ug/projects/f_pall/html/t11.html.  I did not do a good job of showing the knuckle joint like attachment on the bottom that one would use to mount it from the ceiling of the mine or tunnel. Different, Unusual, and Very Nice!!

Fine . . . . . . $495.00     SOLD!!

W. & L. E. Gurley Light Mountain Solar Transit w/ Burt Patent Solar Attachment in Original Box  This c. 1880s W. & L. E. Gurley Solar Transit is in fine overall condition. W. & L. E. Gurley was located in Troy New York and their reputation for the manufacture of quality surveying related instruments was unsurpassed. Having no serial # dates it from before 1908. The straight leg A standards indicate it dates from the 1880s. The design of the Burt Attachment confirms that as well.

Solar Transits are one of the most sought after and desirable of all surveying related instruments developed or offered. They are very graphic and make for great display pieces.

Solar instruments were developed for use in the field to facilitate finding ones location using the sun and horizon much as seamen would do with sextants or octants. Their use was made necessary where ore deposits would adversely affect the accuracy of a regular compass. Their use enabled the user to find a true reference or location using the horizon and the position of the sun instead of the standard methods employing just the compass.

All motions operate smoothly. The compass face is nice and the compass needle swings north. Cross hairs are present. The Burt attachment is clearly marked W. & L. E. Gurley and the 1867 patent date. Also includes is the original leather covered box and collapsible leg tripod. There is a Lietz repair tag from 1946 outlining the minor repairs and adjustments performed. It looks to have seen little or no use after that.

This W. & L. E. Gurley Solar Transit is one of the most striking and graphic of forms of surveying instrument that are available not to mention one of the most avidly sought. Rarely seen or offered for sale one of these instruments will move your collection to the head of the line.

Fine . . . . . . . $3275.00         SOLD!!

W. & L. E. Gurley Light Mountain Transit w/ Burt Patent Solar Attachment in Original Box  Solar Transits are one of the most sought after and desirable of all surveying instruments as they are so graphic and make for great display pieces. This W. & L. E. Gurley Transit w/ Burt Solar Attachment is in nice overall condition.  Having no serial # dates this transit from before 1908 and the straight leg A standards further indicates it dates from before 1880. Beyond that it is difficult to accurately pinpoint the exact date of manufacture.  

Solar instruments were developed for use in the field to facilitate finding ones location using the sun and horizon much as seamen would do with sextants or octants on the open sea.Their use on land was made necessary where ore deposits would adversely affect the accuracy of a regular compass. The idea behind solar instruments was that in certain areas the magnetic deviation was so great and the errors it could cause so great that these unusual devices were developed as a way to compensate for this effect. Their use enabled the user to find a true reference or location using the horizon and the position of the sun instead of the standard methods employing the compass. 

All motions operate smoothly. The compass swings north. Cross hairs are present. There is an attachment point in the box for the attachment. There is no striding level or adjustment bar. The Burt solar attachment is clearly marked W. & L. E. Gurley. The leather cover for the box has seen better days with the top potion missing entirely. Rarely seen or offered for sale one of these instruments will move your collection to the head of the line.

Good   . . . . . . . $2250.00 w attachment        SOLD!!

Gurley Explorer / Expedition Size Mining Transit w/ 2nd Auxiliary Scope   A fabulous piece of rare surveying / mining equipment in Fine + condition. Even the leather covering on the box is still nice.This unusual and probably unique explorer size mining transit was obviously special ordered from the Gurley factory in Troy New York as this set-up, on this small an instrument, is not described or offered in any Gurley catalog I have ever seen. The 2 point mounting for the second scope is different from anything Gurley typically offered. The serial # of 13376 would date it from 1913.

Everything works properly and the crosshairs are present in both scopes. All motions are free and smooth and the optics are crisp and clear. It also includes the aux. pieces as seen in the pics. The rare near miniature tripod is also included, noting the leg extensions are gone and one clamp is broken,. i have another one of this tripods listed that would make this complete. If this instrument is sold I will sell that tripod to the buyer for 1/2 price. It is in fine condition with the exception of several broken leg clamps.

Good +   . . . . . . . $3950.00       SOLD!!

 Dietzgen Solar Transit   This c. 1900 Dietzgen Solar transit is in nice condition. It is a light mountain or preliminary survey size instrument and has a 9" scope. It has a female threaded mounting point on the top of the scope for a solar attachment.  It is being sold w/o the attachment. All motions are free and smooth. Good optics w/ crosshairs. Compass points north. Nice even patina. An overall nice piece in nice condition.

Good +  . . . . . . . $495.00 w/o attachment        SOLD!!

Gurley Light Mountain Mining Transit   This is a rare Gurley Mining Transit on a Light Mountain size transit frame and different from what is typically seen.

Brian Aregood shows a similar but slightly different version of this mining transit in his book on Gurley surveying instruments and transits. His book states this design was first offered in 1878. The serial # on this transit is 121178 indicating it dates from 1912.

The distinctive feature is that the mining scope and counterweight have tapered posts that fit into the instrument at the axle ends. Once in place there are pins provided to lock them in place. Argood's book shows the same style box as seen on the right, but there is no mention of the pins, and they can not be seen in the pics he used. It is unknown whether this pin in place feature is a later improvement, or a first model of the idea.  

The transit is in overall very nice condition. All level bubbles are good, and motions are smooth with the vernier plate adjustment a bit stiff. Nothing a lube will not remedy.  The compass points north.  The transit optics are good as are the optics in the second scope. The box and its leather covering are in fine condition with good seams. A rare piece for the advanced collection.  

Fine  . . . . . . $3750.00 w/ Attachment     SOLD!!

Ainsworth Light Mountain Mining Transit in Box   This is a nice looking light mountain size transit by Ainsworth of Denver Colorado.Ainsworth was a major western maker and supplier for the mining industry in the western states,  The axle for the main 9" scope is threaded on both sides to take a second mining scope and counterweight. That scope and counterweight are missing.

The overall condition is nice. Cross hairs are present, and the optics are good. All bubbles are full. All motions are free and smooth. The compass points north. A pretty rare instrument that would be a standout if the missing scope could be found. Different, and Nice!!

Good +  . . . . . . $550.00    SOLD!!

Lietz Aluminum Solar Transit   This is a rare transit form in a rare material for surveying instruments from this period. Lietz was the premier maker of instruments in California and the west coast. They first opened for business in the early 1890s. This solar transit has a serial # 1690 which according to Uzes's book on surveying instruments would date it from pre 1906 Earthquake era in San Francisco. Lietz first opened their doors in the 1890s in San Francisco CA and offered some innovative instrument designs to compete with other more established makers and satisfy their customer base on the West Coast. 

The solar transit is shown on the left w/o the attachment, and on the right with it in place. It is being sold either way as I also have a Bausch & Lomb Solar Transit that this attachment fits on. The Saegmuller type solar attachment is unmarked as to maker and is housed in a separate box. (see last few pics)  There is no provision in either transit box for an attachment so it would be proper to go with either instrument as it would be something special ordered according to the users preference.

The transit is in overall very nice condition. Some of the motions are a bit stiff from sitting for so long, and it needs to be lubed and cleaned. The transit optics are good and so are the solar attachments. A rare instrument that will display nicely in a number of collection themes. Very Nice!!  

Fine  . . . . . . $2250.00 w/ Attachment     SOLD!!

W. & L. E. Gurley Transit w/ Smith Solar Attachment   This W. & L. E. Gurley transit is equipped with an unusual form solar attachment known as the Smith Solar Attachment named after the inventor who was issued his patent in 1881. Solar transits are one of the most desirable and sought after of all surveying instruments to be found. They are graphic, historically important, rare, and represent an important aspect of surveying history. This example dates from the 1950s and the end of the era for this design or style instrument before GPS and electronic instruments took their place.

This instrument and the Smith Solar attachment are in like new near mint condition. The serial # on the transit indicates a manufacture date of 1956. The box is very nice as well.  All motions and the screws are free. The compass works and the compass face is very nice. Also included is a brochure and an additional print out on the instruments use and proper setting up of it. Also included is a Cox Stadia rule put out by Gurley. This instrument once belonged to Bud Uzes, the well known surveying instrument collector and author of the book Chaining the Land. There are two pictures of him using this transit on a job in 1989 in New Mexico. 

The idea behind solar instruments, either transits or compasses, was that in certain areas the magnetic deviation was so great, and the errors it could cause so great, that these unusual and significant devices were developed as a way to compensate for or alleviate this effect. The Burt Solar attachment was first Patented in the 1830's to be used on solar compasses. Gurley later bought the rights and offered this style attachment with their instruments. Later on they also offered the Smith Patent version. A solar instrument enabled the user to find a true reference or location using the horizon and the position of the sun instead of the standard method employing the compass. Even though the concept had been around and employed in seafaring navigation for centuries, very few of them were actually made for use in the field w/ transits or compasses.They are rare.

Each major surveying instrument maker made a transit that could be equipped with one form or another of these devices. The best known names in the surveying instrument field were Gurley and Keuffel & Esser, but Berger, Buff, Dietzgen, Lietz, Warren Knight, Sala, and others offered versions solar transits. Different attachments are typically known by the name of the inventor, and the examples designed and developed by Saegmuller, Smith, Pearson & Burt being the best known solar attachments. The Saegmuller, Smith and Pearson utilized small secondary  scopes, while the Burt design more closely resembled a octant or sextant in design and used a peep site.

Rarely seen or offered for sale this transit will move your collection to the head of the line. A super piece.

Fine   . . . . . . . $2750.00      SOLD!!

Buff & Buff Mfg. Co. Solar Transit w/ Smith Patent Solar Attachment / Box & Tripod  This Buff & Buff solar transit is in exceptional condition. From the serial #28294 we can surmise this solar transit was manufactured in the 1920's - 1930's.  The Buff & Buff MFG. Co was formed after the breakup of the Buff and Berger company back near the turn of the century. The original firm of Buff & Berger split into two companies with each principal going into business with family members of the same name, hence the company names, Buff & Buff, and Berger & Sons found on those later instruments.

The transit has developed a nice even patina on the brass portions. The transits main scope is 9" long which would make this a light mountain size transit. It has an image erect and the optics are good and clear. Crosshairs are present. The 4" silvered compass works properly. The silvered vertical circle is 4" and has an aux Stadia scale as shown. All level bubbles are good, and there are 2 striding levels as well. All motions operate as they should but this instrument should be gone through and lubed as some thumbscrews are "gummy" tight from sitting unused for nearly 100 years. The solar attachment has an inverted image, and 4 crosshairs. 3 in one orientation and one intersecting. The serial # on the box and instrument match. Even the leather strap is original and stamped with the serial # 28294. The box is very nice and has nearly all of its original finish. The counterweight is a molded piece of lead that is fitted between the standards on the opposite side in such a way as to save space and allowing the box to be smaller and easier to transport in the field.

Solar transits were developed so that the user could accurately determine his location in the field without relying on the magnetic compass. Magnetic deviations would adversely affect a magnetic compass and so they were not an accurate means to determine ones location in many areas. The idea with solar transits was to use the position of the sun and the horizon to determine ones location, much as a sextant or octant would be used to determine ones true location on a boat in open water with no visible reference points. The first patent for a solar transit was granted to Burt in the 1830's but many other variants were developed and patented afterward.

There are a number of different versions of solar attachments that were patented and used on surveying instruments. The Burt solar attachment was used on Gurley, Roach and other instruments. K & E, Buff, Warren Knight, Fauth and others used the Saegmuller patent attachment. Saegmuller Solar Attachments were a top mounted scope. (see below)  The Smith Patent Solar Attachment and the Pearson Solar Attachment mounted on the side of instruments and are both more unusual.

This is is a rare instrument that will display very nicely and be a highlight of any collection of surveying or engineering related instruments.

Fine  . . . . . $1995.00   SOLD!!

Buff & Buff Mfg. Co. Solar Transit w/ Saegmuller Solar Attachment  This Buff & Buff solar transit is in exceptional condition. From the serial #6625 we can surmise this transit was manufactured shortly after the turn of the century. The Buff & Buff MFG. Co was formed after the breakup of the Buff and Berger company back near the turn of the century. The new company began their serial # at 4000.

The instrument has a near perfect lacquered finish on the brass portions. The original solar attachment is nickel plated and has a great contrasting look. The transits main scope is 12" long which would make this an engineer's transit. It has an image erect and the optics are crisp and clear. The 4" silvered compass works properly. The silvered vertical circle is 4". All level bubbles are good. All motions operate as they should. The serial # on the box and instrument match. The box is very nice.

Solar transits were developed so that the user could accurately determine his location in the field without relying on the magnetic compass. Magnetic deviations would adversely affect magnetic compasses and so were not an accurate means to determine ones location in many areas. The idea was to use the position of the sun and the horizon to determine ones location, much as a sextant or octant would be used to determine ones true location on a boat in open water with no visible reference points. The first patent for a solar transit was granted to Burt in the 830's but many other variants were developed shortly afterward.

There are a number of different versions of solar attachments that were patented and used on surveying instruments. The Burt solar attachment was used on Gurley, Roach and a few other instruments. K & E, Buff, Fauth, Warren Knight and others used the Saegmuller patent attachment. As evidenced by the other Buff Solar listed, a buyer could order different style solar attachments of his choice.

This is is a rare surveying instrument that will display very nicely and be a highlight of any collection of engineering related instruments.

Fine  . . . . . $2550.00     SOLD!!

A. Lietz San Francisco Mining Transit w/ Secondary Scope in Box   A large graphic antique mining related surveying instrument with a 11 inch main scope and 7" secondary scope. This good condition antique mining transit is in its original box and was made by A. Lietz California's premier surveying instrument maker and dealer.The black finish is very nice overall.The compass needle is 3 1/2. The optics in both scopes is nice. Lietz instruments are hard to date, but I would think this dates from after the turn of the century and pre WWII. The box is solid. Very Nice!!

Mining transits were used in situations where the operator had to shoot down vertical shafts or odd angles. When mounted on the side it projected past the plate to allow the user to shoot along that line. Different manufacturers used different approaches to solve the problem. Gurley's number for the secondary scope was #160. Catalogs of the era show that it could be ordered to mount over the scope as well. Other manufactures used the same means or slight variations on the theme. Buff offered a rare version where the main scope could be released and moved into another position further out on the standards above the plate. There is also a version with a leaning frame to allow for the same effect. They are much harder to find than a standard instrument and make a great display when set up.

Fine . . . . . . $1495.00    SOLD!!

Buff & Buff Mfg. Co. Mining Transit w/ Box & Tripod  This Buff & Buff mining transit is in exceptional condition. From the serial  #9842 on the plate we can surmise this transit was manufactured in the first quarter of the 1900's.Mining transits were developed so that the user could shoot past the plate when sighting down a mine shaft. The second scope could be mounted on the top, or off one or the other side.

The Buff & Buff MFG. Co was formed after the breakup of the Buff and Berger company back near the turn of the century. The original firm of Buff & Berger split into two companies in 1898 with each principal going into business with family members of the same name, hence the company names, Buff & Buff, and Berger & Sons found on those later instruments.

The transit has has a matte green finish showing just minimal scuffs & wear at some high spots. The transits main scope is 9" long which would make this a light mountain size transit. It has an erect image and the optics are crisp and clear. The main scope has 6 crosshairs. One vertical, 3 horizontal, and an X.  The smaller scope has a simple cross. The silvered vertical circle is enclosed and read from the side window facing the operator. All level bubbles are good. All motions operate as they should with some stiffness from sitting for nearly 100 years. They could use a lube. The serial # on the box and instrument do not match. The leather strap is original and stamped with a serial #.  It has a break or tear in it. The box is very nice and has nearly all of its original finish with minor scuffs. There is a counterweight and several sunshades mounted on the base board. The base board has the same number as the strap, which is different from the # on the instrument. The original Buff marked collapsible leg tripod is in fine condition and is included in the price.

This is is a rare instrument that will display very nicely and be a highlight of any mining, surveying, or related collection.

Fine  . . . . . $2200.00    SOLD!!

Buff Solar Transit w/ Smith Patent Solar Attachment in Original Box This unusual Buff solar transit came from the Bureau of Land Management and was used in the Pacific Northwest to check lines and boundaries on government properties. From the serial #24846 we can surmise this Buff solar transit was manufactured in the 1920's - 1930's after the breakup of the Buff and Berger company back near the turn of the century. The original firm of Buff & Berger split into two companies with each principal going into business with family members of the same name, hence the names, Buff & Buff, and Berger & Sons on later instruments.

Solar transits were developed so that the user could accurately determine his location without relying on the compass in the field. Because of magnetic deviations compasses were not an accurate means to determine ones location in many areas. The idea was to use the position of the sun and the horizon to determine ones location, much as a sextant or octant would be used to determine ones true location on a boat in open water with no visible reference points.

There are a number of different versions of solar attachments that were patented and used on surveying instruments. The Burt solar attachment which was used on Gurley Instruments, and the Saegmuller solar used on K & E instruments being the most frequently seen. Both of those types mounted on the top of the scope. Smith Patent Solar Attachments mount on the side of the instrument and are much more unusual.

The instrument has developed a nice even patina. The transits main scope is 9" long which would make this a light mountain size transit. It has an image erect and the optics are crisp and clear. The silvered compass works and is 4" with a tiny 2" needle. The silvered vertical circle is 4". All level bubbles are good, and there are 2 striding levels in the box as well. All motions operate as they should. The serial # on the box and instrument match. Even the leather strap is original and stamped with the serial # 24846. The box is very nice and has nearly all of its original finish. The counterweight is a molded piece of lead that is fitted to the opposite side in such a way to save space and making the box smaller and easier to transport in the field.

This is a rare instrument that will display very nicely and be a highlight of any collection of surveying related instruments.

Good + . . . . . . $2450.00     SOLD!!

Berger Mining Transit w/ Aux. Mining Scope Attachment   This was the third surveying instrument I bought that has a provision for taking an auxiliary scope mounting either on top or on the side of the transit.   These auxiliary scopes were typically utilized in mining applications as a means to more readily determine locations and reference points, allowing the user to shoot straight down past the plate.

I have bought and sold a lot of transits and levels by various manufacturers over the years, and during that time saw very few surveying instruments that had this provision to take an auxiliary scope that this style of transit does. This example showed up on eBay one day with a BUY IT NOWicon and I hit it just a couple of hours after it had been listed. I figured I had done OK. Over the next month or so 3 more  appeared on eBay, with each one bringing less than the previous. One of them was in absolutely immaculate condition, and I was the underbidder, with the next lower bidder at a lot less than I paid for this one. The other in lesser condition after 10 days bought just about what I paid for this example. Is it a case of them not being rare, or did these examples come out of the woodwork so to speak because of the price paid for the first one, or was it simply a fluke of timing. Over the years I have seen and / or been part of this kinds of scenario before. Where you run into a pocket of something that was previously considered very rare, and suddenly there are a dozen or more of them available. The prices fluctuate, and are volatile for a while. I have yet to figure out exactly where this instrument fits into this picture, but it is a very nice example and comes complete with its tripod and box. The auxiliary scope is a different finish, but that is to be expected and not improper.

The counterweight is present, as well s two different style sunshades. The box is in nice condition overall. and there are three different labels glued to the inside. The overall condition is very nice, and I believe that this instrument was factory refinished at one point it is so nice. All bubbles are good, and all of the screws and motions turn freely as they should.  The collapsible tripod is very nice as well and is included in this offering.

Good . . . . .$850.00        SOLD

Buff & Buff Mining Transit w/ Secondary Scope  This engineer size Buff mining transit is equipped with a second scope to allow the user to shot over the edge of the plate when it is aimed straight down. The second scope can also be mounted on the outside of the transit on the main axle.This arrangement with 2 scopes was used inside of mines to help in the layout of tunnels and shafts. I believe it dates from sometime just after the turn of the century.

The vertical circle is silvered and graduated to 30. So is the vernier on the plate.This graphic looking transit has a 4" compass needle. The compass works well, and the silvered face is nice. The optics are clear and the cross hairs are intact. The smaller scope has a cloud on the end lens. It is also stiff when trying to adjust it, but it does focus, and its crosshairs are present. There is no counterweight. All other motions are smooth, and work properly. The three level vials are full. There is no box.  A very nice looking and hard to find mining transit that will display very nicely.

Good  . . . . . . .$950.00        SOLD

Berger Mining Transit   This engineer size Berger mining transit is set up to accept a second scope to allow the user to shot over the edge of the plate when it is aimed straight down. This arrangement with 2 scopes was used inside of mines to layout tunnels and vertical shafts.There is no second scope although the last pics show it with the scope from the instrument listed above to show what it would look like.

The vertical circle is silvered and graduated to 30. So is the vernier on the plate.This graphic looking transit has a 3" compass needle and black face. The serial number is 17503. The compass works well. The optics are clear and the cross hairs are intact. The counterweight is present and attached to the base plate. It has a double telescopic effect when focusing it. The front extends out in 2 stages. There is also a thumbscrew near the eyepiece which does not operate or turn. The eyepiece focuses by twisting and pulling it out so I am not sure what this motion is there for. All other motions are smooth, and work properly. The three level vials are full. The box is nice, and has several paper labels inside. A very nice looking and hard to find mining transit that will display very nicely.

Good + . . . . . . .$975.00        SOLD!!

C. L. Berger & Sons Solar Transit w/ Pearson's Patent Solar Attachment   This C. L. Berger & Sons solar transit dates from right around the turn of the century. It is marked on the compass face "C. L. Berger & Sons Successors to Buff & Berger Boston". The serial # is 3249 which would date this from right around the turn of the century, and just after the breakup of the original Buff & Berger Firm in 1898. From available company records this transit was originally sold with the shown solar attachment.

The compass is very nice and operates properly.  The compass face measures approx 5" and the silvered needle just over 4". The horizontal vernier is silvered and in excellent condition.The transit itself stands just over 12" tall, and the scope is approx 11" long. All motions are free and turn freely. The brass finish has developed a very nice patina.  The transit focuses and the crosshairs consist of three horizontals and one vertical. The image is erect and not inverted. At the eyepiece end it seems there is cap missing, and the adjustment to bring the crosshairs into focus is tight / stiff. The half circle vernier is silvered and reads to 30 degrees. The half circle vernier has a slight bend of about 2 degrees on the right side, as if it had been bumped at some point. It still rides freely and reads from the scale just fine. It has a 3 1/4 inch tripod mount and I do not have the tripod. Different makers utilized different styles of solar attachments and Buff & Berger adopted the Pearson Patent Solar Attachment. The patent for the Pearson solar attachment was granted in 1882 about the same time as most other patents for these rare & unusual devices called solar attachments were issued.The Pearson patent, like the Saegmuller utilized a telescopic sight. Because of its design and the way it mounts this solar attachment uses the transits frame and settings for its set up.  The Burt solar attachment and other top mounted style solar attachments had their own adjusters. This Pearson patent solar attachment appears to be NOS and retains nearly 100% of it original finish and Lacquer. It is marked on the inside of the attachment Buff & Berger which means it was made just before the transit and before the original Buff & Berger Co. broke up. It is stamped with the #3 which may be its serial # or an assembly #. The focus is crisp and the crosshairs present. As can be seen in the pics there is a dark lens cap, and a sun shade for it as well. There are places in the box these can be mounted to.

The transit has the proper box, and the cosmetic condition of it is pretty nice. There are several paper labels inside including instructions on what to and not to do. There is no place in the box for the attachment, but as I stated earlier, company records indicate the transit and attachment were originally sold together.

This style and form of transit with this unusual solar attachment was not widely distributed and thus is quite rare. Over the years I have seen dozens of Burt Style solar attachments offered for sale on Gurley and other make transits. I have seen and had a handful of the Saegmuller solar attachments that K & E,  Lietz, and Dietzgen used, and I have even seen several of the later Smith patent solar attachment offered for sale, but this is the first Pearson solar attachment by this patentee and maker that I have had or seen offered. It will make a great addition to the collection of rare scientific or surveying related antiques.

Excellent . . . . . .$2250.00       sOLD!!     

Buff Solar Transit w/ Smith Patent Solar Attachment  This unusual Buff solar transit came from the Bureau of Land Management and was used in the Pacific Northwest to check lines and boundaries on government properties. From the serial #24846 we can surmise this Buff solar transit was manufactured in the 1920's - 1930's after the breakup of the Buff and Berger company back near the turn of the century. The original firm split into two companies with each principal going into business with family members of the same name, Buff & Buff, and Berger & Sons.

Solar transits are a very hard to find surveying instrument that were developed so that the user could accurately determine his location without relying on the compass in the field.  Because of magnetic deviations compasses were not an accurate means to determine ones location. The idea was to use the position of the sun, and the horizon to determine ones location, much as a sextant or octant would be used to determine ones true location on a boat in open water with no visible reference points. There are a number of different versions of solar attachments that were patented and used on surveying instruments.  The Burt solar attachment which was used on Gurley Instruments, and the Saegmuller solar used on K & E instruments being the most frequently seen. Smith Patent Solar Attachments are much less frequently seen than those or others that were developed during the period of roughly 1850 to the turn of the century.

The transits main scope is 9" long which would make this a light mountain size transit to be used in the field . It has an image erect and the optics are crisp and clear. The silvered compass is 4" and operates properly. All other motions seem to operate as they should. The serial # on the box and instrument match. Even the leather strap is original and it too is stamped with the serial # 24846. The box is very nice and has nearly all of its original finish. The instrument itself has developed a nice even patina. The counterweight is a molded piece of lead that is fitted to the opposite side in such a way to save space and making the box smaller and easier to transport in the field.

This is a rare instrument that will display very nicely and be a highlight of any collection of surveying related instruments.

Good + . . . . . .$1950.00       SOLD!!

J. C. Sala Solar Transit w/ Gurley Burt Solar Attachment  J. C. Sala one of the three famous West Coast Surveying Instrument Makers from San Francisco working during the 19th century. They were William Albert Schmolz, John Roach, and Joseph Charles Sala. Schmolz, whose working dates were from the mid 1850's until his death in 1891 was responsible for patenting the idea to adapt the Burt Solar Apparatus to a transit and was granted a patent for this idea in 1867. Gurley bought the rights to this idea, and introduced their version around 1874, agreeing to pay Schmolz $5.00 for each one they sold.  Sala who was born in 1841 and at first apprenticed to Roach was first listed in San Francisco Directories as Roach's partner in the 1861 Directory and took over the business upon Roach's death in 1891. This instruments serial #  is1157 and was probably made shortly after the turn of the century. Sala died in 1916.

This solar transit is in an amazing state of preservation. The box is dovetailed, and the original leather covering is very nice. The box has a repair near the bottom on the right side. The compass face has a black finish and the points are nicely engraved. There is a full vertical circle, and the vernier is silvered. All bubbles are good, and all motions are free. The cross hairs are present. The solar attachment is marked Gurley. The transits main scope is 11" long which would make this an engineers or surveyors transit . It has an erect image and the optics are crisp and clear. The compass face is nice, and the needle operates properly. All other motions seem to operate as they should.The instrument itself has developed a nice even patina. The proper tripod is available for an additional $200.00

Solar transits were developed so that the user could accurately determine his location without relying on the compass in the field. Magnetic deviations, especially here in the west, and in other locations where the geography contains large amounts of magnetic ore could throw off a magnetic compass and were not an accurate means to determine ones location in certain areas. The idea was to use the position of the sun, the horizon, and time of day to determine ones location. Much as a sextant or octant was used to determine ones true location on a boat in open water with no visible reference points prior to GPS.

There are a number of different versions of solar attachments that were patented and used on surveying instruments. The Burt solar attachment was used on Gurley instruments and on those by Sala and Roach. K & E used the Saegmuller style which was a small telescope that mounts above the main scope. Other types of solar attachments are the Smith and Pearson Patent Solar Attachments named after the patent holder or inventor.

This transit will display very nicely and be a highlight of any collection of surveying related instruments or California history. Different, and Nice!!

Fine  . . . . . . $2495.00    SOLD!!

Dietzgen Light Mountain Solar / Mining Transit   This is a very nice condition Dietzgen Light Mountain size Solar / Mining transit. I could not find the exact catalog # looking through several old catalogs, but it is set up to take a solar attachment on the top of the scope, and the main scope axle ends are threaded to accept an auxiliary mining scope and counterweight there as well. Dietzgen referred to such set-ups as "complete" in their catalogs. Problem is, this example is not complete as neither the solar attachment nor the mining scope are present.   

Good +  . . . . . $575.00       SOLD!!

A. Lietz San Francisco Light Mountain Mining Transit This is a nice looking light mountain size transit by the well known California make A. Lietz of San Francisco. The serial number of 17,301. It looks to date from prior to WWII. The overall condition is nice. Cross hairs are present, and the optics are good. All bubbles are full. All motions are free and smooth. The compass points north. Note how the caps on the ends of the scope axles are threaded to allow a second scope to be affixed there. That scope is missing. Different, and Nice!!

Good +  . . . . . . $225.00   SOLD!!

Lietz Surveyor / Engineer's Mining Transit  This Lietz Mining Transit is a large and commanding instrument in good overall condition. The A. Lietz Co. of San Francisco stopped making instruments around the beginning of WWII and opened up shop shortly before the turn of the century.The name info is under the glass below the north point on the compass face. The serial # is 1X026.

This transit would date from some point before the beginning of WWII and after the turn of the century. Note how the ends of the scope axles have threaded caps for mounting a second scope and counterweight on the opposite side. The black finish is 90% or better. The optics are OK, and crosshairs present. The box is present and nice. A nice display piece.

Good + . . . . . . $175.00      SOLD!!

Keuffel & Esser Saegmuller Type Solar Attachment  This K & E Saegmuller type solar attachment is in nice overall condition.The optics are OK. There are 6 crosshairs, and the image is inverted. It is unmarked as to maker, but has the distinctive K & E slide in dovetail mount on the base. It is called off as model # 5090 in K & E catalogs. There is no way to exactly date it, but it looks to be from near or just after the turn of the century. It will fit on any size K & E instrument that has the proper dovetailed receiver on the top of the main scope.

Solar attachments were developed for use in the field to facilitate finding ones location using the sun and horizon much as seafarers would do with sextants or octants. There use was made necessary when there was a danger of ore deposits affecting the accuracy of a regular compass. Each surveying instrument maker developed or adapted one or more different designs for use on their instruments. Other patented versions were named after the inventor such as Burt, Smith, Pearson, and others.

A nice example of a rare piece that will make an otherwise standard looking instrument into a rare and desirable instrument that display well. 

Good +  . . . . . . $895.00        SOLD!!

Lietz Burt Patent Solar Attachment   This solar attachment is marked with the Lietz name and a serial #. It is in fine condition. The Burt style solar attachment was used by several different makers for their instruments. Most notably Gurley who first purchased the patent rights. Some are marked some not. Some have minor design differences or looks. This one has a quick release feature I have not seen before. The base could be screwed into place and then the top half was dropped down onto the tapered post eliminating the typical problem of not being able to turn the entire unit due to the vertical circle getting in the way. An interesting design feature.

Solar attachments were developed for use in the field to facilitate finding ones location using the sun and horizon much as seafarers would do with sextants or octants. There use was made necessary when there was a danger of ore deposits affecting the accuracy of a regular compass. Each surveying instrument maker developed or adapted one or more different designs for use on their instruments. Other patented versions were named after the inventor such as Burt, Smith, Saegmuller, and others.

A nice example of a rare piece that will make an otherwise standard looking instrument into a rare and desirable instrument that display well. 

Good +  . . . . . . $950.00        SOLD!!

Buff Saegmuller Patent Solar Attachment   This Buff made Saegmuller Patent solar attachment is in near pristine condition. It is unmarked but has Buff characteristics. Saegmuller style solar attachments were used by several different surveying instrument makers including K & E, Dietzgen, Warren Knight, Lietz and others. Some are marked some not.

Solar attachments were developed for use in the field to facilitate finding ones location using the sun and horizon much as seafarers would do with sextants or octants. There use was made necessary when there was a danger of ore deposits affecting the accuracy of a regular compass. Each surveying instrument maker developed or adapted one or more different designs for use on their instruments. Other patented versions were usually named after the inventor such as Burt, Smith, Pearson, Saegmuller, and others.

A nice example of a rare piece that will make an otherwise standard looking surveying instrument into a rare and desirable solar transit.  Nice!!

Fine  . . . . . . $995.00         SOLD!!

Buff & Buff Saegmuller Patent Solar Attachment This Saegmuller Patent Buff & Buff solar attachment is in near pristine condition in its original box and also includes the original instruction booklet.

The Saegmuller style solar attachment was used by several different instrument makers including K & E, Dietzgen, Warren Knight, Lietz and others to name a few. This example is unmarked save for the label on the box and the instructions and could be adapted to a number of different makers transits or instruments.

Solar attachments were developed for use in the field to facilitate finding ones location using the sun and horizon much as seafarers would do with sextants or octants. There use was made necessary when there was a danger of ore deposits affecting the accuracy of a regular compass. Each surveying instrument maker developed or adapted one or more different designs for use on their instruments. Other patented versions were usually named after the inventor such as Burt, Smith, Pearson, Saegmuller, and others.

A nice example of a rare piece that will make an otherwise standard looking instrument into a rare and desirable instrument.  None nicer!!

Fine  . . . . . . $1295.00         SOLD!!

Gurley Auxiliary Scope for Surveying Compass The auxiliary scope is designed to fit on one compass sight vane of a surveyors compass. It is in nice condition and just shows minor box tarnish. It is marked Gurley on the mounting block and on the label inside the box.  It is also marked with a 1878 patent date. The optics are good and the crosshairs are there. It is a slight variation of the one offered with a compass above. A graphic looking instrument that will display very nicely and make a standard looking compass by any number of makers be a stand out addition in any collection.

Fine  . . . . . . $895.00    SOLD!!

Auxiliary Scope for Mining Transit   This Auxiliary Scope is unmarked as to maker. It has been suggested it may be a Young or Queen product. It is meant to mount onto a male stud on the end of the transit axle, or on a stud mounted on top of a transit scope. The female mount measures approx 3/8 " x ?? TPI It is approx. 9" long. The optics are OK. There is no way to exactly date it, but it looks to be from near the turn of the century or before.

Auxiliary Mining Scopes / Transits were developed for use when in locations or situations where the operator had to shoot a line where the plate would interfere with the work at hand. That is why they were mounted over or outside of the plate line.

A nice example of a rare piece that will make an otherwise standard looking instrument into a rare and desirable instrument that display well.

Good + . . . . . . $795.00       SOLD!!

Buff & Buff Saegmuller Type #1 Solar Attachment in Original Box  This rare Saegmuller type solar attachment is for use on a surveying transit and looks to have never been used. The hard leatherette covered carry case is like new. The original instructions are like new. The finish on the instrument is near pristine.   Please look at all the pics to see the exceptional condition.

Solar attachments were developed for use in the field to facilitate finding ones location using the sun and horizon much as seafarers would do with sextants or octants. There use was made necessary when there was a danger of ore deposits affecting the accuracy of a regular compass. Each surveying instrument maker developed or adapted one or more different designs for use on their instruments. Other patented versions were named after the inventor such as Burt, Smith, Pearson, and others.  A nice example of a rare piece that will display very nicely on any number of instruments.

Fine +  . . . . . . $1295.00     SOLD!!

Dietzgen Saegmuller Type Solar Attachment  This Dietzgen Saegmuller type solar attachment is for use on a surveying transit and looks to have little if any use. It is still in the remains of its original box, and comes with its original receipt dated 1934. It appears it was owned by the government at one time and meant for use laying out the Mexico / US border. Probably in preparation for a wall like Trump now proposes. The original black finish on the instrument is near pristine. It is marked Dietzgen on the base. It is called off as # 6098 in a catalog from that era. Note that the base has a scope mount attached meaning that this attachment could be adapted to fit different transits.  Please look at all the pics to see the exceptional condition.

Solar attachments were developed for use in the field to facilitate finding ones location using the sun and horizon much as seafarers would do with sextants or octants. There use was made necessary when there was a danger of ore deposits affecting the accuracy of a regular compass. Each surveying instrument maker developed or adapted one or more different designs for use on their instruments. Other patented versions were named after the inventor such as Burt, Smith, Pearson, and others.  A nice example of a rare piece that will display very nicely on any number of instruments.

Fine +  . . . . . . $850.00    SOLD!!

Buff & Berger's Pearson Patent Solar Attachment  The Buff & Berger partnership first appeared in the 1870's and was dissolved in 1898 when both principals opened firms under their own names with the addition of other family members. Hence the later instrument maker names Berger & Sons, and Buff & Buff. That would date this rare Buff & Berger solar attachment as pre 1898. 

Pearson was first granted the patent for this telescopic solar attachment in 1875, and Buff & Berger offered an improved version after 1878. Also note the handwritten instructions that are glued into the top of the box. Faded but legible.

Solar attachments were developed for use in the field to facilitate finding ones location using the sun and horizon much as seafarers would do with sextants or octants. Their use was made necessary when there was a danger of ore deposits affecting the accuracy of a magnetic compass. Each surveying instrument maker developed or adapted one or more different designs for use on their instruments. Other patented versions of solar attachments were named after the inventor such as Burt, Smith, Saegmuller, and others.

A nice example of a rare piece that will make an otherwise standard looking transit into a rare and desirable solar instrument that will display well.

Good +  . . . . . . $1250.00        SOLD!!

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