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n. pl. surveyors' levels
An instrument having a telescope and attached spirit level mounted on a tripod and rotating around a vertical axis.
(Surveying) another term for level19
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|Noun||1.||surveyor's level - surveying instrument consisting basically of a small telescope with an attached spirit level rotating around a vertical axis; for measuring relative heights of land|
Abney level - 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
Dumpy level - a surveyor's level having a short telescope fixed to a horizontally rotating table and a spirit level
spirit level, level - indicator that establishes the horizontal when a bubble is centered in a tube of liquid