Sextant
date: label: date made
content: ca 1865
name: label: maker
content: Charles Frodsham
notes: label: Description
content: This sextant has a brass frame. The silvered scale is graduated every 10 minutes from -5° to +145° and read by vernier with tangent screw and swinging magnifier to single minutes of arc. The inscriptions read "Frodsham, Liverpool" and "2602." It came from Vassar College, and may have been used by the professor of astronomy, Maria Mitchell.
label: Description
content: Ref: Gloria Clifton, <i>Directory of British Scientific Instrument Makers 1550-1851</i> (London, 1995), p. 106.
label: Location
content: Currently not on view
place: label: place made
content: United Kingdom: England, Liverpool
setName: label: See more items in
content: Medicine and Science: Physical Sciences
label: See more items in
content: Navigation
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content: Measuring & Mapping
creditLine: label: Credit Line
content: Gift of Vassar College
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1980.0318.03
label: catalog number
content: 1980.0318.03
label: accession number
content: 1980.0318
objectType: label: Object Name
content: sextant
physicalDescription: label: Physical Description
content: mahogany (overall material)
label: Physical Description
content: brass (overall material)
label: Physical Description
content: silver (overall material)
label: Physical Description
content: glass (overall material)
label: Measurements
content: radius: 8 in; 20.32 cm
label: Measurements
content: overall: 4 15/16 in x 12 7/8 in x 11 1/4 in; 12.54125 cm x 32.7025 cm x 28.575 cm