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Blackboard Railroad Curve

American History Museum

Drawing Curve
There are restrictions for re-using this image. For more information, visit the Smithsonian's Terms of Use page .
International media Interoperability Framework
IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more.
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Object Details

Description

The edge of this flat wooden blackboard curve appears to be an arc of a circle with a radius of about eleven inches. The object resembles a railroad curve but has a handle at the center and chalk marks.
A chalk mark on the back reads: 4.
Received from the Department of Mathematics at Brown University in 1973.

Location

Currently not on view

Credit Line

Gift of Brown University Department of Mathematics

date made

ca 1900

ID Number

MA.304722.12

accession number

1973304722

catalog number

304722.12

Object Name

Curve

Physical Description

wood (overall material)

Measurements

overall: 2.8 cm x 44.7 cm x 10.2 cm; 1 3/32 in x 17 19/32 in x 4 1/32 in

See more items in

Medicine and Science: Mathematics
Curves
Science & Mathematics

Data Source

National Museum of American History

Subject

Mathematics
Drawing Instruments

Metadata Usage

CC0

Link to Original Record

https://n2t.net/ark:/65665/ng49ca746b2-7f03-704b-e053-15f76fa0b4fa

Record ID

nmah_904419
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