Da Vinci Inventions

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Across
  1. 1. it used a spring-driven mechanism similar to that in a clock.
  2. 6. has a number of light cannons arranged on a circular platform with wheels that allow for 360-degree range.
  3. 7. make it possible for drive shafts to rotate, for goods to roll along ramps in a factory or store, and for mechanical devices in general to operate.
Down
  1. 2. two wings of the device feature pointed ends commonly associated with the winged creature.
  2. 3. allowed breathing hoses connected to a floating bell full of air, wearing face-masks with glass goggles that would help them see underwater.
  3. 4. seems to be designed to fire large stones or possibly flaming bombs.
  4. 5. an instrument for measuring the speed of wind.