Definition of "rangefinder" [rangefinder]

• Any of several designs of optical (or other) instrument that is used to measure the distance to an object (noun)

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• "A rangefinder is not a bad idea either so you can shoot some ranges to known objects when you sit down to call."
• "On our way back to camp, we checked the rangefinder from the spots where I'd taken both shots."
• "I learned on my first trip out a rangefinder was a MUST for distance."