Calculating Machine Component, Pinwheels
notes: label: Description
content: These objects were collected by Brooklyn high school teacher and historian of mathematics L. Leland Locke and held by the Museums of the Peaceful Arts in New York City before coming to the Smithsonian. Included is a set of 9 brass discs with pins, alternating with steel discs, arranged on a shaft with three additional discs and a quarter disc. Rotating a steel disc causes pins to protrude from the adjacent brass disc.
label: Location
content: Currently not on view
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Calculating Machines
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content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of L. Leland Locke
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1983.3003.052
label: nonaccession number
content: 1983.3003
label: catalog number
content: 1983.3003.052
objectType: label: Object Name
content: calculating machine component
physicalDescription: label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: 7.5 cm x 19.5 cm x 8.7 cm; 2 15/16 in x 7 11/16 in x 3 7/16 in