1) Geological tool
Found on
https://www.crosswordclues.com/clue/tiltmeter
A tiltmeter is an instrument designed to measure very small changes from the vertical level, either on the ground or in structures. A similar term, in less common usage, is the inclinometer. Tiltmeters are used extensively for monitoring volcanoes, the response of dams to filling, the small movements of potential landslides, the orientation and vo...
Found on
http://en.wikipedia.org/wiki/Tiltmeter
instrument for measuring tilting of earth's surface
Found on
http://phrontistery.info/t.html
No exact match found.
