Protractor, Kleman & Son, 1814 - 1820 instrument Brass transporter or degree arch in a wooden box. The radius of the degree arch is 86 mm. The center of the bow is indicated with an iron needle and the instrument has an arm with a nonius on the arch. Amsterdam wood (plant material). brass (alloy). iron (metal). textile materials

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Size: 5170px × 3449px
Photo credit: © piemags/rmn / Alamy / Afripics
License: Licensed
Model Released: No

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