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

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:: drawing instruments and semi-circular protractors

credit:: Thomas H. Court

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Parts

Case for semicircular single-arm protractor by Kleman and Son

Case for semicircular single-arm protractor by Kleman and Son, Amsterdam

Object Number:: 1919-291 Pt1

type:: instrument case

Semicircular single-arm protractor by J.M. Kleman and Son

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