Blackboard Drawing Instrument, Curve, Parabola
date: label: date made
content: ca 1900
notes: label: Description
content: This flat wooden blackboard curve has a handle held horizontally by screws. The top edge is a parabola, the base is straight. Both the turning point at the top of the parabola and the midpoint of the base are marked. A hole at the center toward the top allows one to suspend the instrument.
label: Description
content: Compare 1982.0795.37, which has a similar handle and general construction.
label: Description
content: The instrument came to the Smithsonian from the Mathematics Department of the University of Michigan in 1964.
label: Description
content: Reference:
label: Description
content: Accession File.
label: Location
content: Currently not on view
topic: label: Subject
content: Mathematics
label: Subject
content: Drawing Instruments
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Curves
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content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of the Department of Mathematics, The University of Michigan
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1982.0795.36
label: accession number
content: 1982.0795
label: catalog number
content: 1982.0795.36
objectType: label: Object Name
content: Curve
physicalDescription: label: Physical Description
content: wood (overall material)
label: Measurements
content: overall: 3 cm x 34.5 cm x 39.4 cm; 1 3/16 in x 13 19/32 in x 15 1/2 in