70. Military Protractor

Signed: I Marke fe:

c. 1670

  Fig. 96

A circular silver protractor with no other function than drawing polygons. The positions of lines from the centre to the corners of all regular polygons with between three and twelve sides are marked on ten concentric circles, each devoted to a single figure. There is no scale of degrees.

Diameter: 127 mm

Inventory no. 23,689


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