Blackboard Drawing Instrument, Curve, Parabola

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Description:

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.

Compare 1982.0795.37, which has a similar handle and general construction.

The instrument came to the Smithsonian from the Mathematics Department of the University of Michigan in 1964.

Reference:

Accession File.

Date Made: ca 1900

Location: Currently not on view

Subject: MathematicsDrawing Instruments

Subject:

See more items in: Medicine and Science: Mathematics, Curves, Science & Mathematics

Exhibition:

Exhibition Location:

Credit Line: Gift of the Department of Mathematics, The University of Michigan

Data Source: National Museum of American History

Id Number: 1982.0795.36Accession Number: 1982.0795Catalog Number: 1982.0795.36

Object Name: Curve

Physical Description: wood (overall material)Measurements: 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

Metadata Usage: CC0

Guid: http://n2t.net/ark:/65665/ng49ca746a7-4765-704b-e053-15f76fa0b4fa

Record Id: nmah_904427

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