Photocopy of a Photograph Showing the Crampton Trigonometric Calculating Instrument

Photocopy of a Photograph Showing the Crampton Trigonometric Calculating Instrument

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Description
This is a photocopy of a photograph of the instrument for calculating all trigonometric functions co-invented by Frank Crampton. It includes a small vernier which is missing from the object. Also included is a business card of the donor.
For related object, see MA.335540.
Location
Currently not on view
Object Name
sheet
place made
United States: District of Columbia
Physical Description
paper (overall material)
Measurements
overall: 21.5 cm x 28 cm; 8 15/32 in x 11 1/32 in
ID Number
MA.317954.05
accession number
317954
catalog number
317954.05
Credit Line
Gift of Esther L. Crampton
subject
Mathematics
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Trigonometry
Data Source
National Museum of American History
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