Semicircular single-arm protractor in case: by J.M

Made:
Amsterdam

Semicircular single-arm protractor in case: by J.M. Kleman and Son, Amsterdam, early 18tyh century. Diameter 6 11/ 16" divided to 1/2 degrees, reads by vernier to 1 minute of arc

Details

Category:
Mathematics
Object Number:
1919-291
type:
semi-circular protractors
credit:
Thomas H. Court
status:
Permanent collection

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