rangefinder
Definition
Noun: A device used to measure the distance from the observer to a target. It is a measuring instrument that can be acoustic, optical, or electronic in its operation.
Usage
A rangefinder is used to determine an exact distance. It is commonly employed in photography, surveying, military applications, golf, and hunting. - The photographer adjusted the lens using a laser rangefinder. - Artillery units rely on accurate rangefinders to hit their targets.
Advanced Usage
- As a compound modifier: The term can function adjectivally before another noun to specify the type of device.
- Rangefinder camera: A type of camera that uses a dual-image rangefinder mechanism for focusing.
- The vintage rangefinder camera was prized by collectors.
Variants and Related Words
- Range finding (noun): The act or process of determining distance.
- Telemeter (noun): A device for measuring distance, often used synonymously with rangefinder in specific contexts.
Synonyms
- Distance measurer
- Telemeter
- Range estimator
Related Phrases
- Laser rangefinder: A type that uses a laser beam to determine distance.
- The golfer checked the yardage with his laser rangefinder.
- Optical rangefinder: A type that uses visual principles, such as coincidence or stereoscopy.
- The submarine's periscope contained an optical rangefinder.
Noun
-
a measuring instrument (acoustic or optical or electronic) for finding the distance of an object
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