This is a very nice Fauth Alidade package that was once owned by the
C. E. F. (Central Experimental Farm) in Canada. The package includes
the Fauth Alidade, Gurley Plane Table and Gurley Tripod.
C. E. F. History:
In 1886, Canada established the Central Experimental Farm in Ottawa,
Ontario. The Farm became the centre of research activities to improve
agriculture and crops. Over a hundred years later, the Central Farm
still exists, it still conducts scientific study on plants and crops, and it
still houses the federal head offices of Agriculture and Agri-food Canada.
In 1998, the government declared the Farm a National Historic Site and
shifted focus to include historical education and recreation, acknowledging
the Farm’s significance in the evolution of agriculture in Canada.
This instrument will make a great collectible and with its history will make
a great addition to any collection.
Optics are clear
Striding vial is good
Cross wires are intact
Knobs and motions work well
Case is in great condition
Includes Lens Cover and Sun Shade
The leather shoulder strap on the board canvas carrying bag is broken
**The large circular vial on the Alidade plate has no fluid in it. **
Nice
1909 Keuffel & Esser U.S. - C.G.S Precise Level
These levels were designed by the US Coast &
Geodetic Survey around 1900.
$795.00
Description:
This is a nice K&E US-C.G.S. Precise Level model #5027. These
were designed by the Coast & Geodetic Survey around 1900 and built by
several different makers. This is an early K&E version made in 1909.
It has the lighter color as the later models came in black. None of
the different makers made a lot of these as it is considered a specialized
type of instrument. Since these instruments are so specialized it
makes them difficult to find if you are looking to add a unique instrument
to your collection.
This instrument is heavy weighing around 25lbs. and measures about 16" long.
The design of this instrument calls for it to be made out of Nickel iron and
Nickel steel which is why it is so heavy. These two components have a
very low expansion/contraction rate of less than .000004 per degree of
Centigrade. It also has a built in micrometer to make the instrument
even more accurate than the plain Dumpy or even Wye levels of the time.
These are great collectables and if you want a unique instrument than this
one is for you.
Very Nice All Original Gurley Model 580
Explorers' Alidade
$795.00 This is a very nice all original Gurley Explorers' Alidade.
The explorers' alidade is the smallest alidade made by Gurley. This one
was owned by the US government as seen by the lettering on both the case and
the instrument itself. These were used for topographic surveys to create Topo. maps. This
alidade model
was made in 1953.
The telescope is an inverted image. The optics are clean and the cross wires are intact.
Dimensions:
Telescope Length = 8 1/2"
Height To The Top Of Vial = 5"
Vertical Cir. Dia. = 4"
Horizontal Cir. Dia. = N/A
Compass Needle Size = N/A
Overall Length = 11 1/2"
Serial Number 530512
Vertical Lock and Motion Works Well
Stadia Cross Wires Are Intact
Cross Wire Focus & Field Of View Focus Work Very Well
Optics Are Clean
No Sign Of Lens Problems
The Level Vials Are Good
Leather Wrapped Case In Good Condition
Very Nice All Original David White U.S.
Explorers' Alidade
$595.00 This is a very nice all original David White Explorers' Alidade.
The explorers' alidade is the smallest alidade made by David White. This one
was owned by the US government as seen by the lettering on both the case and
the instrument itself. These were used for topographic surveys to create Topo. maps. This
alidade model
was made in the early 1950's.
The telescope is an inverted image. The optics are clean and the cross wires are intact.
Dimensions:
Telescope Length = 9 3/4"
Height To The Top Of Vial = 4 3/4"
Vertical Cir. Dia. = 4"
Horizontal Cir. Dia. = N/A
Compass Needle Size = N/A
Overall Length = 11 1/2"
Serial Number 63000
Vertical Lock and Motion Works Well
Stadia Cross Wires Are Intact
Cross Wire Focus & Field Of View Focus Work Very Well
Optics Are Clean
No Sign Of Lens Problems
The Level Vials Are Good
Leather Wrapped Case In Good Condition (Missing The Shoulder
Strap)
Possibly A Dietzgen Auxiliary Mining
Telescope?????
$795.00
We believe this is a Dietzgen auxiliary mining telescope.
These mount on the side or on top of the original telescope for a transit
with the mining scope studs.
This scope appears to be missing the tangent and base but if you have these items this
will make a great addition to your collection.
Click images for close-up)
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