Parallel rule and protractor with index arm

Made:
1865-1875 in New York
manufacturer:
Brooklyn Arms Company

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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:
parallel rule
credit:
Tesseract
status:
Permanent collection

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