David White Co. Sextant

Description
This type of sextant was introduced during World War II. The limb is graduated to single degrees. A drum micrometer, the teeth of which mesh with teeth cut into the edge of the limb, reads to 1 minute and, with vernier, to 6 seconds of arc. The inscriptions read "David White Co. Milwaukee, Wis." and "U.S. NAVY, BU. NAV. MARK II"
Ref: Benjamin Dutton, Navigation and Nautical Astronomy (Annapolis, Md., 1948), pp. 347-355.
Location
Currently not on view
Object Name
sextant
date made
1941-1945
maker
David White Co.
Measurements
box: 5 1/2 in x 11 1/4 in x 11 3/4 in; 13.97 cm x 28.575 cm x 29.845 cm
sextant radius: 6 1/2 in; 16.51 cm
place made
United States: Wisconsin, Milwaukee
ID Number
2004.0054.01
catalog number
2004.0054.01
accession number
2004.0054
subject
Measuring & Mapping
Navigation
See more items in
Medicine and Science: Physical Sciences
Navigation
Data Source
National Museum of American History, Kenneth E. Behring Center

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