The horizontal circle of this theodolite is silvered, graduated to single minutes, and read by opposite verniers with magnifiers to single seconds. The vertical circle is silvered, and read by single vernier and magnifier. The inscription reads "Wm. Würdemann, Washington, D.C. No 163." William Würdemann (1811-1900) was a precision instrument from Germany who began working in Washington in 1834.

Date Made: mid-nineteeth century

Maker: Würdemann, William

Location: Currently not on view

Place Made: United States: District of Columbia, Washington

See more items in: Medicine and Science: Physical Sciences, Surveying and Geodesy, Measuring & Mapping


Exhibition Location:

Credit Line: U.S. Coast and Geodetic Survey

Data Source: National Museum of American History

Id Number: PH.316530Accession Number: 225703Catalog Number: 316530

Object Name: theodolite

Measurements: overall: 13 in; 33.02 cmhorizontal circle: 6 in; 15.24 cmvertical circle: 2 1/2 in; 6.35 cmoverall: 13 1/8 in x 8 1/8 in x 10 11/16 in; 33.3375 cm x 20.6375 cm x 27.14625 cm


Record Id: nmah_747933

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