W. & S. Jones Sextant

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Description
The double-framed brass sextant was patented by Edward Troughton in London in 1788, and the form remained popular throughout the first half of the 19th century. This example belonged to Haverford College in Pennsylvania and may have been acquired when that school was founded in 1833. It has a silvered scale that is graduated every 10 minutes from -5° to +145° and read by vernier with tangent screw and swinging magnifier. The inscription reads "W. & S. Jones Holborn London."
Ref: Edward Troughton, "Framing to be used in the construction of octants, sextants, and quadrants," British patent #1644.
Location
Currently not on view
date made
1800-1850
maker
W. & S. Jones
place made
United Kingdom: England, London
Measurements
box: 12 cm x 33.6 cm x 33.6305 cm; 4 23/32 in x 13 7/32 in x 13 1/4 in
overall: 10.8 cm x 28.3 cm x 28.3 cm; 4 1/4 in x 11 5/32 in x 11 5/32 in
overall in box: 4 3/4 in x 13 in x 12 1/2 in; 12.065 cm x 33.02 cm x 31.75 cm
ID Number
1981.0745.06
catalog number
1981.0745.06
accession number
1981.0745
Credit Line
Haverford College
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Data Source
National Museum of American History, Kenneth E. Behring Center

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