surveyor's level

Noun
  1. Surveying instrument consisting basically of a small telescope with an attached spirit level rotating around a vertical axis;
    For measuring relative heights of land (synset 104372838)
    is a type of: surveying instrument, surveyor's instrument - an instrument used by surveyors
    subtypes:
    • 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
    has: level, spirit level - indicator that establishes the horizontal when a bubble is centered in a tube of liquid

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