any of certain devices or attachments for determining distances by measuring the angle subtending a known distance.
Electricity. the complete measuring, transmitting, and receiving apparatus for indicating, recording, or integrating at a distance, by electrical translating means, the value of a quantity.
verb (used with object)
to transmit (radio signals, data, etc.) automatically and at a distance, as between a ground station and an artificial satellite, space probe, or the like, especially in order to record information, operate guidance apparatus, etc.
1860, a rangefinder for surveying and artillery, from French télémètre (1852), from télé- "far" (see tele-) + mètre "meter" (see -meter). Used from 1953 for a pay-as-you-watch TV system with a coin box attached to the set.
The measurement of data at a remote source and transmission of the data (typically by radio) to a monitoring station. Telemetry is used, for example, to track the movements of wild animals that have been tagged with radio transmitters, and to transmit meteorological data from weather balloons to weather stations.