Hurlimann Sextant

This sextant has a silvered scale that is graduated every 20 minutes from -5° to +175° and read by vernier with tangent screw and magnifier to 30 seconds of arc. The inscriptions read "Lorieux, A. Hurlimann succr à Paris" and "C. & G.S. 307." The U.S. Coast & Geodetic Survey acquired it in 1907 and transferred it to the Smithsonian in 1929.
A. Hurlimann was a mathematical instrument maker in Paris who took over Lorieux's shop in the early 1890s. He was succeeded by Ponthus & Therrode a few years later.
Currently not on view
Object Name
date made
ca 1907
Hurlimann, A.
Physical Description
brass (overall material)
silver (overall material)
glass (overall material)
radius: 5 1/2 in; 13.97 cm
place made
France: Île-de-France, Paris
ID Number
accession number
catalog number
Measuring & Mapping
See more items in
Medicine and Science: Physical Sciences
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
U.S. Coast and Geodetic Survey

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