Astronomical Quadrant
date: label: associated dates
content: 1931 10 28 / 1931 10 28
label: associated dates
content: 1899 01 26 / 1899 01 26
label: associated dates
content: 1796 00 00 / 1796 00 00, 1890 00 00 / 1890 00 00
name: label: user
content: Ellicott, Andrew
notes: label: Description
content: This portable astronomical quadrant, which resembles English instruments of the late eighteenth century, has a 12-inch radius, stands 17 inches high, and could be used for measuring star altitudes. It belonged to Andrew Ellicott (1754-1820), a surveyor/geodesist who ran the boundaries of several American states, and who probably made it for his own use. The lenses are original. Andrew Ellicott Douglass added the tangent screw in 1885.
label: Location
content: Currently not on view
place: label: associated place
content: United States: Arizona, Tucson
label: associated place
content: United States: Arizona, Flagstaff
setName: label: See more items in
content: Medicine and Science: Physical Sciences
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.152081
label: accession number
content: 116914
label: catalog number
content: 152081
objectType: label: Object Name
content: Astronomical Quadrant
physicalDescription: label: Physical Description
content: metal, brass (overall material)
label: Physical Description
content: glass (overall material)
label: Physical Description
content: original lenses. (container material)
label: Measurements
content: average spatial: 45.1 cm x 30.5 cm x 24.8 cm; 17 3/4 in x 12 in x 9 3/4 in
label: Measurements
content: overall: 17 5/8 in x 13 1/4 in x 13 3/8 in; 44.7675 cm x 33.655 cm x 33.9725 cm