1. telemeter - Noun
2. telemeter - Verb
An instrument used for measuring the distance of an object from an observer; as, a telescope with a micrometer for measuring the apparent diameter of an object whose real dimensions are known.
Source: Webster's dictionaryFor example, it is common for spacecraft attitude-control systems to be commanded in terms of quaternions, which are also used to telemeter their current attitude. Source: Internet
A telemeter is a device used to remotely measure any quantity. Source: Internet