WK-20-8403 Pilot Balloon Theodolite by Warren-Knight Instrument Company

Companies & Organizations:

United States of America

Warren-Knight Instrument Company
2045 Bennett Road
Philadelphia, PA 19116-3019

The Warren-Knight WK-20-8403 theodolite is designed to observe and measure angles of elevation and azimuth of pilot/weather balloons, aircraft, ships or other moving objects to distances of 20,000 meters or more under conditions of good visibility.


The 90° elbow telescope design combines a 21x main telescope with a wide angle 4x telescope, viewed through one horizontal eyepiece. Permits superior tracking capability even when objects pass overhead. Measurement up to 20,000 meters


The micrometer drums are offered in various resolutions, 6 arc minutes, 72 arc seconds and 36 arc seconds, to fit your application. The instrument is a light weight portable self-contained theodolite– weighing only 19 lbs. 10 oz.


Movement of both the elevation and azimuth scales is by positive micrometer worm drive. A removable battery case holds 2 flashlight cells for night illumination of scales and reticle. Permanently attached compass enables orientation by magnetic compass.


The Theodolite can be provided without the magnetic compass (WK-20-8400).

Defense Products & Services: WK-20-8403 Pilot Balloon Theodolite by Warren-Knight Instrument Company
Companies & Organizations: 
Defense Products & Services Sectors: Theodolites, ground-based
Description: WK-20-8403 Pilot Balloon Theodolite
Source of Information: Warren-Knight Instrument Company