Molteni Sextant

This sextant belonged to Weston College in Weston, Massachusetts, and probably dates from the third quarter of the 19th century. It has a brass frame. The inscription on the arc reads "J. & A. Molteni à Paris." The silvered scale is graduated every 10 minutes from -5° to +168° and read by vernier with tangent screw and magnifier to 10 seconds of arc. The Molteni family was in business in Paris from 1782 to about 1900, making a wide variety of mathematical instruments.
Currently not on view
Object Name
date made
19th century
J. & A. Molteni
Physical Description
mahogany (overall material)
brass (overall material)
silver (overall material)
overall: 9 3/4 in x 11 in x 4 in; 24.765 cm x 27.94 cm x 10.16 cm
place made
France: Île-de-France, Paris
ID Number
catalog number
accession 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
Weston College
Additional Media

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