Dictionary

range finder

noun

Definition of RANGE FINDER

1
:  an instrument used in gunnery to determine the distance of a target
2
:  a surveying instrument (as a transit) for determining quickly the distances, bearings, and elevations of distant objects
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)

First Known Use of RANGE FINDER

1872

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