David White Theodolite

Description
This 9-inch theodolite was made for the U. S. Coast and Geodetic Survey, and designed for first order triangulation. It dates from the mid-1930s. New, it cost $2,175. It is marked "David White Co. Milwaukee Wis. No. 9049" and "USC&GS No. G362." The horizontal circle is graduated to degrees, and read by opposite micrometers with drum dials to 30 seconds. The vertical circle is graduated to 10 minutes, and read by opposite verniers and magnifiers to single minutes. The David White Co. was established in 1895, and renamed the David White Instrument Co. in 1956.
Ref: David White Co., Catalog A, 7th edition (Milwaukee, Wisconsin, about 1937), pp. 103-104.
Object Name
geodetic theodolite
maker
David White Co.
Measurements
overall: 10 in; 25.4 cm
horizontal circle: 9 in; 22.86 cm
vertical circle: 5 1/2 in; 13.97 cm
telescope: 13 in; 33.02 cm
place made
United States: Wisconsin, Milwaukee
ID Number
1986.0395.11
accession number
1986.0395
catalog number
1986.0395.11
subject
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
cited
David White Co.. Catalog A, 7th Edition

Visitor Comments

Add a comment about this object

Submit a comment or ask a question about this object using the form below. Submissions are moderated and may receive a curator response. Please note that we cannot evaluate or appraise your personal artifacts. For other questions or general inquiries please visit our FAQ or contact page.

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

Image CAPTCHA
Enter the characters shown in the image.