Theodolite
name: label: maker
content: Fauth & Co.
notes: label: Description
content: 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.
label: Description
content: Ref: Fauth & Co., <i>Catalogue of Astronomical and Surveying Instruments</i> (Washington, D.C., 1877), pp. 24–26.
label: Location
content: Currently not on view
place: label: place made
content: United States: District of Columbia, Washington
setName: label: See more items in
content: Medicine and Science: Physical Sciences
label: See more items in
content: Surveying and Geodesy
label: See more items in
content: Measuring & Mapping
publisher: label: Related Publication
content: Fauth & Co.. Catalogue of Astronomical and Surveying Instruments, 1877
creditLine: label: Credit Line
content: Columbia University. Department of Civil Engineering and Engineering Mechanics
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.334950
label: catalog number
content: 334950
label: accession number
content: 317998
objectType: label: Object Name
content: theodolite
physicalDescription: label: Measurements
content: overall: 20 in; 50.8 cm
label: Measurements
content: horizontal circle: 8 in; 20.32 cm
label: Measurements
content: vertical circle: 6 1/2 in; 16.51 cm
label: Measurements
content: telescope: 14 in; 35.56 cm
label: Measurements
content: striding level: 8 in; 20.32 cm