Octant with 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. A back sight and back horizon glass can be used to measure angles greater than 90°.

Location: Currently not on view

See more items in: Medicine and Science: Physical Sciences, Navigation, Measuring & Mapping


Exhibition Location:

Credit Line: College of the Holy Cross

Data Source: National Museum of American History

Id Number: PH.326931Catalog Number: 326931Accession Number: 264083

Object Name: octant

Measurements: radius: 17 3/4 in; 45.085 cmoverall: 3 in x 16 1/8 in x 19 3/16 in; 7.62 cm x 40.9575 cm x 48.73625 cm

Guid: http://n2t.net/ark:/65665/ng49ca746a9-f8fa-704b-e053-15f76fa0b4fa

Record Id: nmah_1167876

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