rangefinder
ran·ge·fin·der
noun
1.
a measuring instrument (acoustic or optical or electronic) for finding the distance of an object
Origin
From range + finder.
Related words
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.