Norie Octant

Description
This octant has an ebony frame, reinforced brass index arm, and ivory name plate. The ivory scale is graduated every 20 minutes from -3° to +100° and read by vernier with tangent screw to single minutes of arc. There is also a back sight and a back horizon glass that could be used to measure angles greater than 90°. The "NORIE LONDON" inscription refers to John William Norie, proprietor of a Navigation Warehouse in London from 1799. The firm traded as Norie & Co. from 1816-1839.
Ref: Gloria Clifton, Directory of British Scientific Instrument Makers 1550-1851 (London, 1895), p. 201.
date made
ca 1800
maker
Norie
place made
United Kingdom: England, London
Physical Description
ebony (overall material)
brass (overall material)
Measurements
overall: 12 in x 10 in x 3 1/2 in; 30.48 cm x 25.4 cm x 8.89 cm
ID Number
PH.334285
catalog number
334285
accession number
306664
Credit Line
Edward Corcoran
subject
Sailing Ships
See more items in
Medicine and Science: Physical Sciences
Measuring & Mapping
Navigation
Exhibition
Norie Atlas
Exhibition Location
National Museum of American History
Data Source
National Museum of American History, Kenneth E. Behring Center

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