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What underwater breathing device did Leonardo da Vinci design as a diving bell?
Answer
Diving bell
What emergency-air device did Leonardo da Vinci sketch as a pyramid-shaped parachute?
Answer
Parachute
What navigation instrument did Leonardo da Vinci design to find direction at sea?
Answer
Compass
What machine did Leonardo da Vinci design to cut threads in metal?
Answer
Thread-cutting machine
What device did Leonardo da Vinci design to lift and move heavy loads?
Answer
Crane
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What machine did Leonardo da Vinci design to cut threads in metal?
Answer
Thread-cutting machine
What kind of lock gate did Leonardo da Vinci develop for canals?
Answer
Mitre gate
What did Leonardo da Vinci’s hygrometer measure?
Answer
Humidity
What vehicle did Leonardo da Vinci design with a spring-powered mechanism?
Answer
Self-propelled cart
What mechanical figure did Leonardo da Vinci design with armor and movable limbs?
Answer
Robotic knight