range finder

or range·find·er

noun

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.

Words nearby range finder

rang, ranga, rangatira, rangatiratanga, range, range finder, range light, range line, range of accommodation, range of stability, range oil

Origin of range finder

First recorded in 1870–75

Examples from the Web for range finder

The target was just coming into view, and through the range-finder the distance was quickly computed.
Two Boys of the Battleship|Frank V. Webster
Garboreggg adjusted a second control that was something like a range-finder.
Raiders of the Universes|Donald Wandrei
Just carried on with that sketch of Hopkins at the range-finder.
A Case in Camera|Oliver Onions
But Fiske's range-finder makes no mathematical calculations, nor requires them to be made, and is automatic.
Steam Steel and Electricity|James W. Steele

And first it may be stated that the range-finder is largely a measure of mere economy.
Steam Steel and Electricity|James W. Steele