Rupp Sextant

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Karl Axel Eriksson, a native of Sweden who became a U.S. citizen around 1910, bought this sextant, secondhand, in England in 1918. He used it for the rest of his life, and believed that it helped him "advance as a sailor."
The sextant has a brass frame. The inscription reads "Michael Rupp & Co. New York" and "English." The silvered scale is graduated every 15 minutes from -5° to +135° and read by vernier with tangent screw and swinging magnifier to 15 seconds of arc.
Michael Rupp (1818-1899) was born in France, came to the U.S. in 1829, and settled in New York in 1844. By 1855 he was selling chronometers and other nautical instruments.
Currently not on view
date made
Rupp, Michael
place made
United States: New York, New York
radius: 7 1/2 in; 19.05 cm
overall in box: 5 1/16 in x 11 in x 9 3/4 in; 12.85875 cm x 27.94 cm x 24.765 cm
ID Number
catalog number
accession number
Credit Line
Chester Hansen
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Medicine and Science: Physical Sciences
Measuring & Mapping
Data Source
National Museum of American History