CrosswordMint
Forgotten Wonders of Inventive Genius
A crossword puzzle exploring rare, lost inventions and forgotten gadgets that once sparked innovation but vanished from modern use.
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Across
  • 1. Ancient instrument used for solving problems related to time and the stars
  • 2. Optical device for projecting images in the 18th century
  • 3. Sight device used on surveying and measuring instruments
  • 5. Gadget invented by Alexander Graham Bell to transmit sound on light beams
  • 11. Early long-distance communication device using coded signals
  • 12. Mechanical counting aid predating modern calculators
  • 13. Mechanical model of the solar system
  • 16. Early type of mechanical calculating machine
  • 17. Refers to early electric battery technology by Alessandro Volta
Down
  • 4. Device that transmitted handwriting through telegraph lines
  • 6. Optical tool used to see over obstacles or underwater
  • 7. Apparatus to view fast-moving objects in slow motion
  • 8. Ancient fire-starting gadget that spontaneously ignites
  • 9. Old motion picture projection device
  • 10. Device designed to measure wind speed
  • 14. Navigation tool used before the sextant
  • 15. Early diving suit used for underwater exploration
  • 18. Device for measuring or maintaining orientation

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