#surveying_instrument__surveyinginstrument__surveyor's_instrument  an instrument used by surveyors
  supertype:  instrument  a device that requires skill for proper use
  part:  sight.optical_instrument
  subtype:  alidade__alidad  surveying instrument used with a plane table for drawing lines of sight on a distant object and for measuring angles
  subtype:  alidad__alidade  surveying instrument consisting of the upper movable part of a theodolite including the telescope and its attachments
  subtype:  clinometer__inclinometer  an instrument used by surveyors in order to measure an angle of inclination or elevation
  subtype:  plane_table__planetable  surveying instrument consisting of a drawing board and a ruler that are mounted on a tripod; used to sight and map topographical details
  subtype:  range_pole__rangepole__ranging_pole__rangingpole__flagpole  surveying instrument consisting of a straight rod painted in bands of alternate red and white each one foot wide; used for sightings by surveyors
  subtype:  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
     subtype:  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
     subtype:  Dumpy_level  a surveyor's level having a short telescope fixed to a horizontally rotating table and a spirit level
  subtype:  theodolite__transit  a surveying instrument for measuring horizontal and vertical angles, consisting of a small telescope mounted on a tripod
     subtype:  tachymeter__tacheometer  a theodolite designed for rapid measurements

No statement uses or specializes surveying_instrument; click here to add one.