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Hard Leonardo Da Vinci's Inventions

What moisture-measuring instrument did Leonardo da Vinci design using a balance and absorbent material?

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Intermediate Leonardo Da Vinci's Inventions

What mechanical humanoid did Leonardo da Vinci design for a Milan court spectacle?

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Intermediate Leonardo Da Vinci's Inventions

What early mechanical device did Leonardo da Vinci draw using three balls to reduce friction between moving surfaces?

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Intermediate Leonardo Da Vinci's Inventions

What ship-safety system did Leonardo da Vinci propose by giving a vessel two separate hulls?

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Intermediate Leonardo Da Vinci's Inventions

What canal device did Leonardo da Vinci improve to raise boats between different water levels?

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