Newell Octant

This octant has a rosewood frame, flat brass index arm, and ivory name plate. The ivory scale is graduated every 20 minutes from -5° to +95° and read by vernier to single minutes of arc. The "Andw Newell Maker Boston" inscription refers to Andrew Newell (1751-1798), a mathematical instrument maker in Boston. Inside the box is the trade card of David Baker, proprietor of a nautical instrument shop in New Bedford during the second quarter of the nineteenth century.
Currently not on view
Object Name
date made
ca 1800
Newell, Andrew
overall: 7.94 cm x 38.7 cm x 33 cm; 3 1/8 in x 15 1/4 in x 13 in
place made
United States: Massachusetts, Boston
ID Number
accession number
catalog number
Measuring & Mapping
Time and Navigation
See more items in
Medicine and Science: Physical Sciences
Time and Navigation
Data Source
National Museum of American History, Kenneth E. Behring Center
Additional Media

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