Octant

Octant

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Description
This has an ebony frame, a reinforced brass index arm, an ivory scale that is graduated every 20' from -2° to +107° and read by vernier with tangent screw to 30" of arc. The inscription reads "Spencer Browning & Co London. Made for D. McGregor & Co Glasgow & Greenock." Spencer Browning & Co. were in business from 1840 to 1870.
Western Union transferred this sextant to the Smithsonian in 1972.
Location
Currently not on view
Object Name
Sextant
Octant
octant
date made
ca 1855
Maker
Western Union Corporation
maker
Spencer, Browning & Co.
place made
United Kingdom: England, London
Physical Description
ebony (part: material)
ivory (part: material)
brass (part: material)
mahogany (part: material)
Measurements
box: 12 1/2 in x 11 1/2 in x 5 in; 31.75 cm x 29.21 cm x 12.7 cm
octant: 11 1/2 in x 9 1/2 in x 4 1/2 in; 29.21 cm x 24.13 cm x 11.43 cm
ID Number
EM.331882
catalog number
331882
accession number
294351
collector/donor number
25-54
Credit Line
from Western Union Corporation
See more items in
Work and Industry: Electricity
Data Source
National Museum of American History
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