400-2090 Sight Clinometer

Sight clinometers are used to measure the angle of elevation between a viewer and the light generated by a ceiling light projector when reflected on to a base of a cloud. This information, together with a knowledge of the base line distance between the observer and the projector, is used to determine the cloud height - using simple trigonometric tables supplied with the sight clinometer.

The Model 400-2090 Sight Clinometer is designed to conform to U.S. National Weather Service Specification K110-SP001. The Sight Clinometer consists of a bottle shaped sighting tube, complete with a 1/4" peep-sight and soft rubber eye shield, cross wires, a quadrant scale graduated into one degree intervals from 0-90 degrees, and a pendant arm, complete with index line, clamped into position by a clutch.

The outer end of the sighting tube is three inches in diameter to permit a wide view of the projector light spot, as well as of the surrounding dark sky. Cross wires aid the observer in centering the sight clinometer onto the light spot. The instrument is supplied complete with carrying case and instructions for operation and maintenance.

Specifications

Weight: 2 lbs
Shipping: 6 lbs

Ordering Information

400-2090 Sight Clinometer

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