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Arcane Instruments of Ancient Measurement is a hard crossword puzzle with 18 clues covering . Play it online for free below, or create your own crossword with our free crossword maker.

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Arcane Instruments of Ancient Measurement
Challenging puzzle for experienced crossword solvers
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Across
  • 1. Antiquated instrument for gauging milk’s density and quality.
  • 2. Obsolete term for a surveying staff, instrumental in medieval land measurement.
  • 3. A 17th-century linear measure plotted for navigation and calculation, named after its inventor.
  • 4. Classic maritime tool for angular measurement between celestial bodies and horizon.
  • 6. An early sliding scale precision device, foundational for caliper readings.
  • 8. A device determining fluid density, once essential before digital densitometers.
  • 10. Obsolete angular measuring instrument for star gazing and alignment.
  • 14. A medieval analog calculator used for star altitude and time measurement.
  • 15. Historical log measure for ship speed, named after unit of sound intensity.
Down
  • 5. Rare and archaic instrument to measure angles via tiled surfaces, historical geometry.
  • 7. Mechanical step counter once popular for estimating distance traveled on foot.
  • 9. Old apparatus recording water level changes over time in rivers or wells.
  • 11. Classical Greek tool for surveying, a precursor to the theodolite.
  • 12. Ancient night-time instrument for determining time by stars' positions.
  • 13. An old-fashioned manual device for measuring thickness or diameter.
  • 16. Used in archaeology and surveying to measure slope angles, now digitally replaced.
  • 17. Ancient mechanical counter used for measuring traveled distance on roads.
  • 18. A mechanical model used historically to demonstrate and measure planetary motions.
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