Details

M-220

Protractor: Proportional

An instrument for military surveying and artillery use. Two legs joined with a circular hinge which is screwed to a third central leg. A cursor with a milled locking screw slides along the central leg and is attached by two arms to outer legs.

Unsigned.

c. 1610-20

Germany

	Imperial(in)		Metric(cm)
Height			1.4
Width			5.5
Depth			38.4
Diameter
Circumference

	Imperial(in)		Metric(cm)
Height
Width
Depth
Diameter