تفاصيل

A-247

Rule: Gunter's

Gunter's rule with additional scales. Brass plugs mark origins of various scales and key graduations. One bevelled edge. All lettering is in capital letters. Sized large and small.

"T WILSON LONDON" on (a)

"NAVIGATION. SCALE. IMPROVED. BY. B. DONN" on (b)

England

	Imperial(in)		Metric(cm)
Height			0.5
Width			60.9
Depth			5
Diameter
Circumference

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