range finder

noun

Definition of range finder

  1. 1 :  an instrument used in gunnery to determine the distance of a target

  2. 2 :  a surveying instrument (such as a transit) for determining quickly the distances, bearings, and elevations of distant objects

  3. 3 :  a usually built-in adjustable optical device for focusing a camera that automatically indicates the correct focus (as when two parts of a split image are brought together)

1872

First Known Use of range finder

1872


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