Surveyor's Compass
notes: label: Description
content: This surveyor's compass may date from the third quarter of the 18th century. The bar holding the vertical sights is straight and narrow. The needle rim is graduated to single degrees, and numbered in quadrants from North and South. The face reads clockwise. And, with an extra needle and scales at North and South, the compass can serve as a clinometer for measuring angles of elevation.
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: Surveying and Geodesy
label: See more items in
content: Measuring & Mapping
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1980.0695.01
label: accession number
content: 1980.0695
label: catalog number
content: 1980.0695.01
objectType: label: Object Name
content: Surveyor's Compass
physicalDescription: label: Measurements
content: overall length: 13 1/8 in; 33.3375 cm
label: Measurements
content: needle: 5 in; 12.7 cm
label: Measurements
content: overall: 3 1/8 in x 15 1/2 in x 7 1/2 in; 7.9375 cm x 39.37 cm x 19.05 cm