Octant
date: label: date made
content: ca 1792
notes: label: Description
content: Octant with a mahogany frame and index arm. The boxwood scale is graduated every 20 minutes from 0° to 90° and read by transversals to 2 minutes of arc. An inscription penciled on the back of the scale reads: "Capt. Rowland Thompson = Lewes = Delaware 1792." A descendant donated it to the Smithsonian in 1882.
label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Physical Sciences
label: See more items in
content: Navigation
label: See more items in
content: Measuring & Mapping
creditLine: label: Credit Line
content: George Andrews Thompson
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.308473
label: catalog number
content: 308473
label: accession number
content: 93249
objectType: label: Object Name
content: Octant
physicalDescription: label: Measurements
content: radius: 20 in; 50.8 cm
label: Measurements
content: overall: 22 1/4 in x 18 5/8 in x 3 1/2 in; 56.515 cm x 47.3075 cm x 8.89 cm
label: Measurements
content: overall: 3 3/8 in x 18 1/2 in x 22 3/8 in; 8.5725 cm x 46.99 cm x 56.8325 cm