We don't have synonyms for rangefinders yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are rangefinder, range finders and range finder.
(n) :
Any of several designs of optical (or other) instrument used to measure the distance to an object
(n) :
(photography) Abbreviation of rangefinder camera. [(photography) A camera fitted with a rangefinder, a type of mechanism allowing the photographer to measure the subject distance and take photographs that are in sharp focus.]
(n) :
Any of several designs of optical (or other) instrument used to measure the distance to an object
(n) :
(photography) Abbreviation of rangefinder camera. [(photography) A camera fitted with a rangefinder, a type of mechanism allowing the photographer to measure the subject distance and take photographs that are in sharp focus.]