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Forgotten Wonders of Mechanical Innovation
Explore a crossword featuring 15 obsolete inventions that once shaped history but have now faded into obsolescence.
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Across
  • 1. Early firearm ignition system using sparks
  • 2. Tube system used for sending messages in cities
  • 3. Invented by Edison to play recorded sound
  • 8. Early device for transmitting coded messages over wires
  • 11. Printer and keyboard device for telegraph messages
  • 12. Instrument for navigation by measuring celestial angles
  • 13. Type of telephone dial that spins
Down
  • 4. Sony's videotape format overshadowed by VHS
  • 5. Early motion picture camera and projector
  • 6. Traditional writing tool before fountain pens
  • 7. Mechanical writing device replaced by computers
  • 9. Rigid airship popular before airplanes
  • 10. Early movie viewer using flipping cards
  • 14. Copying process once used for technical drawings
  • 15. Incorrect variation and not an invention

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