Smithsonian - National Museum of American History, Behring Center

 
Physical Sciences Collection - Surveying and Geodesy

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Pocket Compass - click to enlarge

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Pocket Compass

Catalogue number:
PH*316738

Inscriptions:
"Dr F. M. Endlich"

Dimensions:
3.25 inches wide, 3 inches deep

Discussion:
The cardinal points of this compass are lettered N, W, S and O, probably indicating that it was made in Germany. The raised rim is graduated to 15 minutes of time, and numbered counterclockwise, twice, in hours from 1 to 12. One side of the face is graduated to degrees, numbered every 20 degrees from O to N and from O to S. A pendulum clinometer is pivoted at the center. Frederic Miller Endlich (1851-1899) was a mineralogist at the Smithsonian Institution and an assistant on the Hayden geological surveys in the American West in the 1870s.

Further Information:

Compass (pocket)

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