Gilbert & Sons Box Sextant

Description
This has a silvered scale that is graduated every 30 minutes from -3° to +148° and read by vernier with swinging magnifier to single minutes of arc. The "Gilbert & Sons, London" inscription above the magnifier refers to a Navigation Warehouse in London that flourished from 1806 to 1819.
Location
Currently not on view
date made
early 19th century
maker
Gilbert and Sons
place made
United Kingdom: England, London
Measurements
overall: 2 3/4 in; 6.985 cm
overall: 1 1/4 in x 2 3/4 in; 3.175 cm x 6.985 cm
ID Number
PH.318442
accession number
234476
catalog number
318442
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Data Source
National Museum of American History, Kenneth E. Behring Center

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