- 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
"Target—range one eight zero four, azimuth two four oh, elevation one oh seven," the rangefinder reported.
"Action imminent," Chase ordered, and the rangefinder took up his chant.
- an instrument for determining the distance of an object from the observer, esp in order to sight a gun or focus a camera
- another word for tacheometer