Fauth Theodolite

Description
Marked "Fauth & Co. Washn D.C.," this seems to be a smaller and somewhat simpler version of the Altitude–Azimuth instrument that Fauth & Co. showed at the Centennial Exhibition of 1876 and featured in many of their publications. It was made between 1874 when Fauth began in business, and 1887 when Saegmuller began putting serial numbers on Fauth instruments. It belonged to the School of Mines, the program in science and engineering at Columbia College (now University). The horizontal and vertical circles are silvered, graduated to 10 minutes of arc, and read by micrometer microscopes to single minutes. An advertisement for this particular instrument has not been found. A similar instrument—with 10 inch horizontal circle read by 3 microscopes, and 18 inch telescope—cost $850.
Ref: Fauth & Co., Catalogue of Astronomical and Surveying Instruments (Washington, D.C., 1877), pp. 24–26.
Object Name
theodolite
maker
Fauth & Co.
Measurements
overall: 20 in; 50.8 cm
horizontal circle: 8 in; 20.32 cm
vertical circle: 6 1/2 in; 16.51 cm
telescope: 14 in; 35.56 cm
striding level: 8 in; 20.32 cm
place made
United States: District of Columbia, Washington
ID Number
PH*334950
catalog number
334950
accession number
317998
See more items in
Medicine and Science: Physical Sciences
Measuring & Mapping
Surveying and Geodesy
Data Source
National Museum of American History, Kenneth E. Behring Center
cited
Fauth & Co.. Catalogue of Astronomical and Surveying Instruments, 1877
Additional Media

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