Gambey Sextant

Description
Henri Prudence Gambey (1787-1847) was the foremost maker of precision instruments in France in the first half of the 19th century, and many American physicists and geodesists used instruments from his shop. This sextant belonged to the U.S. Coast Survey (the case is stamped "U.S.C.S. No. 61"). Its silvered scale is graduated every 10 minutes from -5° to +150° and read by vernier with tangent screw and magnifier to 10 seconds of arc. The inscription reads "Gambey à Paris."
Ref: Deborah J. Warner, "Gambey’s American Customers," Rittenhouse 4 (1990): 65-78.
Location
Currently not on view
Object Name
sextant
date made
1840s
maker
Gambey, Henri Prudence
Measurements
radius: 7 in; 17.78 cm
place made
France: Île-de-France, Paris
ID Number
PH*309658
accession number
106954
catalog number
309658
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
Credit Line
U.S. Coast & Geodetic Survey

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