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  5. Tools and Equipment (hierarchy name)
  6. equipment
  7. [equipment by profession or discipline]
  8. [equipment for engineering and building trades]
  9. surveying instruments
  10. circumferentors
Scope note
Instruments consisting of a flat brass bar with sights at the ends and a circular brass box in the middle, containing a magnetic needle, which plays over a graduated circle; the whole being supported on a staff or tripod.
Accepted term: 15-Jul-2024