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range finder |
Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson | 0.48 sec. |
range finderInstrument used to measure the distance from the instrument to a selected point or object. The optical range finder, used chiefly in cameras, consists of an arrangement of lenses and prisms set at each end of a tube. The object's range is determined by measuring the angles formed by a line of sight at each end of the tube; the smaller the angles, the greater the distance, and vice versa. Since the mid-1940s, radar has replaced optical range finders for most military targeting, and the laser range finder, developed in 1965, has largely replaced optical range finders for surveying and radar in certain military applications. |
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? Mentioned in | ? References in periodicals archive | |
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Precision Castings won the electronics category for their laser range finder and target acquisitioning system. for your tank's eyesafe laser range finder (ELRF) may not look like much, but you've got a real problem if it's missing in action. Target information was fused from a laser range finder, a compass, and a GPS receiver and then sent to an intelligence system to be refined for high-precision resolution. |
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range finder
