Plotting Board, Army Sketching Case by W. and L.E. Gurley
date: label: date made
content: ca 1910
name: label: maker
content: W. & L. E. Gurley
notes: label: Description
content: This instrument has a wooden base that holds a paper scale attached to a metal disc. Around the rim is a scale of degrees from 0 to 360, divided to degrees. A grid of lines on the inner part of the disc is divided to degrees. Radial distances representing distances of up to two miles are indicated. Reels on either side of the base hold a roll of tracing paper over the disc. There is a compass ring divided to degrees that is enclosed in a metal container and fits to the right of the sketching board. A short belt attached to the back of the base would make it possible to wear the device on the arm. There also is a small clinometer on the back of the instrument. The instrument fits in a cloth pouch which has a leather strap.
label: Description
content: According to the 1912 Gurley catalog, Glenn S. Smith, who patented this instrument September 1, 1908, was a topographer in the U.S. Geological Survey who initially designed this instrument for the Army Engineers. This example of the instrument came to the Smithsonian from the Department of Civil Engineering of the University of Missouri.
label: Description
content: References:
label: Description
content: Glenn S. Smith, "Sketching Outfit," U.S. Patent 897,794, September 1, 1908.
label: Description
content: W. and L. E. Gurley, <I>A Manual of the Principal InstrumentsUsed in American Surveying and Engineering Manufactured by W, & L. E. Gurley, Troy, New York: W. & L. E. Gurley, 1912, pp. 256-258.
label: Location
content: Currently not on view
place: label: place made
content: United States: New York, Troy
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
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content: Plotting Boards
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content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of University of Missouri - Columbia
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.333649
label: accession number
content: 300659
label: catalog number
content: 333649
objectType: label: Object Name
content: plotting board
physicalDescription: label: Physical Description
content: wood (base material)
label: Physical Description
content: metal (mechanism; guides; clamp; protractor material)
label: Physical Description
content: paper (tracing paper material)
label: Physical Description
content: cloth (case material)
label: Physical Description
content: leather (strap material)
label: Physical Description
content: error (extra please eliminate error)
label: Measurements
content: overall: 4.5 cm x 24.5 cm x 33 cm; 1 25/32 in x 9 21/32 in x 13 in