Würdemann Theodolite

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
Object Name
Würdemann, William
overall: 13 in; 33.02 cm
horizontal circle: 6 in; 15.24 cm
vertical circle: 2 1/2 in; 6.35 cm
place made
United States: District of Columbia, Washington
ID Number
accession number
catalog number
Measuring & Mapping
Surveying and Geodesy
See more items in
Medicine and Science: Physical Sciences
Surveying and Geodesy
Data Source
National Museum of American History, Kenneth E. Behring Center

Visitor Comments

Add a comment about this object

**Please read before submitting the form**

Have a comment or question about this object to share with the community? Please use the form below. Selected comments will appear on this page and may receive a museum response (but we can't promise). Please note that we generally cannot answer questions about the history, rarity, or value of your personal artifacts.

Have a question about anything else, or would you prefer a personal response? Please visit our FAQ or contact page.

Personal information will not be shared or result in unsolicited e-mail. See our privacy policy.

Enter the characters shown in the image.