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
overall: 8 in x 9 in x 3 3/4 in; 20.32 cm x 22.86 cm x 9.525 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

Visitor Comments

Add a comment about this object

**Please read before submitting the form**

Have a comment or question about this object to share with the community? Please use the form below. Selected comments will appear on this page and may receive a museum response (but we can't promise). Please note that we generally cannot answer questions about the history, rarity, or value of your personal artifacts.

Have a question about anything else, or would you prefer a personal response? Please visit our FAQ or contact page.

Personal information will not be shared or result in unsolicited e-mail. See our privacy policy.

Enter the characters shown in the image.