WK-20-8400 Pilot Balloon Theodolite

Designed to observe and measure angles of elevation and azimuth of pilot/weather balloons, air crafts, 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 21 power main telescope with a wide angle 4 power telescope, viewed through one horizontal eyepiece. Permits superior tracking capability even when objects pass overhead. 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 built-in battery box holds 2 flashlight cells for night illumination of scales and reticle. Permanently attached compass enables orientation by magnetic compass.

  • Specifications:
  • Magnification: 21x
  • Telescope: 90°
  • Finder: 4 power
  • Resolution: 6 Arc Minutes, 72 Arc Seconds, 36
  • Arc Seconds
  • Measurement: Up to 20,000 Meters
  • Illumination: 2 Flashlight Cells
  • Built-In Battery Box
  • Weight: 19 lbs. 10 oz.
  • Movement by Micrometer Worm Drive

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