[nb-NO]Details[nb-NO]

A-109

Surveying

Sextant: Box

Circular polished brass box of which the lid that when screwed on the back serves as handle. The index arm is moved by a gear and a milled screw let into the upper plate. One shade (red) moved by lever. Horizon glass adjustment only, by square-headed screws and milled key stored in the upper plate. Magnifier (single lens) on a swiveling arm. Sliding shutter with choice of open pinhole or a shade (red).

Signed on the upper plate: "Banks, London"

c. 1820

brass, silver

England

	Imperial(in)		Metric(cm)
Height			7.6
Width			7.6
Depth			3.7
Diameter
Circumference

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