range finder

or range·find·er

  1. any of various instruments for determining the distance from the observer to a particular object, as for sighting a gun or adjusting the focus of a camera.

Origin of range finder

First recorded in 1870–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for rangefinder

Historical Examples of rangefinder

  • "Target—range one eight zero four, azimuth two four oh, elevation one oh seven," the rangefinder reported.

    A Question of Courage

    Jesse Franklin Bone

  • "Action imminent," Chase ordered, and the rangefinder took up his chant.

    A Question of Courage

    Jesse Franklin Bone

British Dictionary definitions for rangefinder


  1. an instrument for determining the distance of an object from the observer, esp in order to sight a gun or focus a camera
  2. another word for tacheometer
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012