Keuffel & Esser Sextant

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Keuffel & Esser termed this a "high grade" sextant as made for the U.S. Navy. The frame is gun metal. The scale is silvered, graduated every 10 minutes from -5° to 155° and read by vernier with tangent screw and magnifier to 10 seconds of arc. The inscription reads "KEUFFEL & ESSER Co NEW YORK 4652." The serial number indicates that it was made in 1900. New it cost $120.
Ref: Keuffel & Esser, Catalogue (New York, 1906), p. 414.
Currently not on view
date made
Keuffel & Esser Co.
place made
United States: New York
United States: New Jersey
radius: 7 in; 17.78 cm
overall: 3 7/8 in x 10 3/4 in x 9 1/8 in; 9.8425 cm x 27.305 cm x 23.1775 cm
ID Number
catalog number
nonaccession number
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Medicine and Science: Physical Sciences
Measuring & Mapping
Data Source
National Museum of American History


I got a k & e transit the serial no. is 233737 also got a number 77 0010 wonder how old it is
The number 77 0010 is the model number of the transit.
The 233737 serial number on a K&E surveying instrument indicates a date around 1973. I don't know about the date of number 77 0010.

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