rangefinder

Thân thiện

A photographer adjusts the rangefinder on his vintage camera.

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.

Học thuật

Noun

1. a measuring instrument (acoustic or optical or electronic) for finding the distance of an object

Từ đồng nghĩa

• range finder