Tom quickly sighted on the range finder and saw a ball of light flash brilliantly in front of the passenger ship.
The range may be determined, with only a small error, by a range finder.
"To be more exact, the range finder in the crow's nest makes the distance 10,980 feet," said the captain.
The voice of the range finder droned over the ship's intercom.
Another valuable feature of this new gun is its applicability as a range finder.
The term "range finder" is a misnomer as a range finder is an instrument.
The Germans have led the way in inventions for this purpose, and their Goertz range finder is perhaps the best in the world.
There is an ingenious instrument known as the range finder, by which the approximate distance of the target is determined.
To operate it you peeked into the range finder, then threw a lever.
He stepped to the range finder, quickly figured the speed of the jet liner, their own speed and the angle of approach.