#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
  supertype:  #surveying_instrument__surveyinginstrument__surveyor's_instrument  an instrument used by surveyors
  subtype:  #Abney_level  #Dumpy_level
  part:  #spirit_level__level  indicator that establishes the horizontal when a bubble is centered in a tube of liquid

No statement uses or specializes #surveyor's_level; click here to add one.