sandglasses

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  3. Objects Facet
  4. Furnishings and Equipment (hierarchy name)
  5. Measuring Devices (hierarchy name)
  6. measuring devices (instruments)
  7. [measuring devices for extent]
  8. timepieces
  9. [timepieces by form]
  10. sandglasses
Scope note
Timepieces that measure equal periods of time by the motion of sand or other freely flowing, fine-grained substances through a narrow aperture between two triangular or conical glass bulbs arranged mouth to mouth; probably introduced in the early 14th century and used then especially for timekeeping aboard ships.
sandglasses
Accepted term: 22-Jul-2024