Plotting Scale
date: label: date made
content: 19th century
notes: label: Description
content: On one side this brass rule has an unnumbered scale of chords and architect's scales for making drawings at proportions of 1/5", 1/4", 1/3", 1/2", and 1" to the foot. The other side has 8" plotting scales with diagonal scales at each end. One plotting scale is divided to 1" and numbered by ones from 1 to 8, and the other is divided to 1/2" and numbered by ones from 1 to 16. A badly worn leather sleeve may not be original to the instrument. Compare to 1980.0676.01.
label: Description
content: The Smithsonian's Division of Ethnology received this rule in 1951 and believed it to be of American manufacture.
label: Location
content: Currently not on view
place: label: place made
content: United States
topic: label: Subject
content: Mathematics
label: Subject
content: Drafting, Engineering
setName: label: See more items in
content: Medicine and Science: Mathematics
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content: Science & Mathematics
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content: Scale Rules
creditLine: label: Credit Line
content: Gift of Dr. and Mrs. Arthur M. Greenwood
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.388991.02
label: accession number
content: 182022
label: catalog number
content: 388991
objectType: label: Object Name
content: scale, plotting
label: Object Name
content: scale rule
physicalDescription: label: Physical Description
content: brass (overall material)
label: Physical Description
content: leather (overall material)
label: Measurements
content: overall: .1 cm x 15.4 cm x 3.1 cm; 1/32 in x 6 1/16 in x 1 7/32 in