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Octant
Catalogue number:
1991.0140.01
Inscriptions:
"Andw Newell Maker Boston"
Dimensions:
radius 14 inches
Discussion:
This octant has a rosewood frame, flat brass index arm, and ivory name plate.
The ivory scale is graduated every 20 minutes from -5o to +95o
and read by vernier to single minutes of arc. Andrew Newell (1751-1798) was 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.
Further Information:
Octant
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