Enter a clue or pattern or both:
The Clue
Surveyor's tool (9 letter answer)
The Answer
TELEMETER
Tags
Notes
The answer TELEMETER is so rare that it appears less than once every 2900 puzzles.
Related Clues
Distance gauge
Range finder
Transmit, as to a satellite
Definition
TELEMETER as a noun:
1. any scientific instrument for observing events at a distance and transmitting the information back to the observer