Collection

Parallel rule and protractor with index arm

Made:
1865-1875 in New York
manufacturer:
Brooklyn Arms Company
Parallel rule and protractor with index arm, brass

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Parallel rule and protractor with index arm, brass
Science Museum Group
© The Board of Trustees of the Science Museum

Parallel rule and protractor with index arm, brass, patented 1864-1865 by Simpson and Taylor and made by Brooklyn Arms Company, New York

Details

Category:
Mathematics
Object Number:
1987-1020
type:
drawing instrument, combined scale protractor and parallel rule
credit:
Tesseract

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