Rangefinder (noun)

An instrument that measures the distance to an object, typically by using laser or radar technology.

Origin:

From the words "range" and "finder".

Examples:

1. The golfer used a rangefinder to measure the distance to the green.
2. The rangefinder on the camera helped the photographer to focus on the subject.
3. The rangefinder on the rifle was essential for long-distance shooting.
4. The architect used a rangefinder to measure the distance from the building to the street.
5. The rangefinder was an important tool for the surveyors in the field work.