Würdemann Theodolite

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William Würdemann made this theodolite during the period 1849–1881, and the U.S. Coast & Geodetic Survey transferred it to the Smithsonian in 1959. The signature reads "Wm. Würdemann, Washington, D.C. No 163." The horizontal circle 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.
Currently not on view
Würdemann, William
place made
United States: District of Columbia, Washington
overall: 13 in; 33.02 cm
horizontal circle: 6 in; 15.24 cm
vertical circle: 2 1/2 in; 6.35 cm
overall: 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
ID Number
accession number
catalog number
Credit Line
U.S. Coast and Geodetic Survey
See more items in
Medicine and Science: Physical Sciences
Measuring & Mapping
Surveying and Geodesy
Data Source
National Museum of American History


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