protractors

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  4. Furnishings and Equipment (hierarchy name)
  5. Measuring Devices (hierarchy name)
  6. measuring devices (instruments)
  7. [measuring devices for extent]
  8. distance measuring devices
  9. angle measuring devices
  10. horizontal angle measuring devices
  11. protractors
Scope note
Devices used for plotting or measuring angles, often designed as graduated arcs.
protractors
Accepted term: 10-Mar-2025