Octant
Octant
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- Description
- This octant has an ebony frame, and flat brass index arm with floral design. The ivory scale is graduated every 20 minutes from -5° to +95° and read by vernier with tangent screw to 2 minutes of arc. There is also a back sight and a back horizon glass that can be used to measure angles greater than 90°. This instrument may have been made in the late eighteenth century. It belonged to the College of the Holy Cross in Worcester, Ma.
- Location
- Currently not on view
- Object Name
- octant
- Measurements
- radius: 17 3/4 in; 45.085 cm
- overall: 3 in x 16 1/8 in x 19 3/16 in; 7.62 cm x 40.9575 cm x 48.73625 cm
- ID Number
- PH.326931
- catalog number
- 326931
- accession number
- 264083
- Credit Line
- College of the Holy Cross
- See more items in
- Medicine and Science: Physical Sciences
- Measuring & Mapping
- Navigation
- Data Source
- National Museum of American History
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