abney level
English Thesaurus
1. a surveying instrument consisting of a spirit level and a sighting tube; used to measure the angle of inclination of a line from the observer to the target (noun.artifact)
| hypernym | : | surveyor's level, |
| definition | : | surveying instrument consisting basically of a small telescope with an attached spirit level rotating around a vertical axis; for measuring relative heights of land (noun.artifact) |
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