Keuffel & Esser Pocket Compass

This compass has one folding sight; a slit in the lid serves as the second sight. Since the lid is mirrored, the user can read the needle while sighting a distant object. The floating card is graduated to degrees and numbered every ten degrees to 360. There is also a second (inner) row of numbers in quadrants, reversed for reading in the mirror. The signature reads "KEUFFEL & ESSER CO NEW-YORK" and it probably dates from the period 1890–1910. Keuffel & Esser donated it to the Smithsonian in 1972.
Ref: Keuffel & Esser, Catalogue (New York, 1906), p.427.
Currently not on view
Object Name
compass (pocket with folding sight)
Keuffel & Esser Co.
overall: 4 in; 10.16 cm
place made
United States: New York, New York
ID Number
catalog number
accession number
See more items in
Medicine and Science: Physical Sciences
Measuring & Mapping
Surveying and Geodesy
Data Source
National Museum of American History, Kenneth E. Behring Center


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