Provides elevation angle measurements used to determine the height of the cloud base. Measures the angle between the observer and the spot of light projected by the clouds on the 22-2095. Consists of a bottle-shaped metal sighting tube with cross hairs, a quadrant scale graduated from 0 to 90°, and a pendant arm. The sighting tube has a ¼-inch-diameter peep sight with an attached soft rubber eye shield. Weight: 2 lbs. (0.9 kg.). Shipping: 6 lbs. (2.7 kg).