range finder

noun

1
: an instrument used in gunnery to determine the distance of a target
2
: a surveying instrument (such as a transit) for determining quickly the distances, bearings, and elevations of distant objects
3
: a usually built-in adjustable optical device for focusing a camera that automatically indicates the correct focus (as when two parts of a split image are brought together)

Examples of range finder in a Sentence

Recent Examples on the Web
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The legal filings also note that authorities observed Crooks acting erratically, using a range finder, and becoming the subject of a search in the hours leading up to the shooting. Louis Casiano, FOXNews.com, 5 June 2026 The lawsuit also said local law enforcement saw Crooks acting erratically at least a half hour prior to Trump's arrival at the rally and later using a range finder, but that the assessment wasn't communicated to Secret Service because of, in part, technological issues. Finch Walker, USA Today, 2 June 2026 Dazzle camouflage was most effective in World War I, when most sailors were using basic periscopes and optical range finders to find their targets. Encyclopedia Britannica, 5 May 2026 Round robin presentation of Leica range finder, Fujifilm medium format, and Nikon Z9 cameras. Staff Report, Baltimore Sun, 4 Feb. 2026 See All Example Sentences for range finder

Word History

First Known Use

1872, in the meaning defined at sense 2

Time Traveler
The first known use of range finder was in 1872

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Cite this Entry

“Range finder.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/range%20finder. Accessed 24 Jun. 2026.

Kids Definition

range finder

noun
: a device used to find out the distance of an object (as a target)

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