Special Features:

Compass scale graduated 0 to 90 deg.; 1 deg. Smallest increment; clinometer scale graduated 0 to 90 deg. Ea. Elevation and depression; 1 deg. Smallest increment; 5 min. Smallest graduation; 0 to 100 pct ea. Elevation and depression; departure from cited designator: as modified by compass scale graduations

Properties:

An instrument utilizing a magnetic needle and a graduated dial to determine direction in relation to the magnetic poles. Operation of the clinometer arm is by a finger lever on the rear of the case. While sighting the instrument, or holding it in contact with a surface, the lever is revolved until the image of a centered bubble is seen reflected in the mirror.