Da Vinci self propelling cart
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- 8809258928461
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Description
Da Vinci self propelling cart
the first cart in history designed by Leonardo da Vinci spring powered
no glue, no paint, no batteries
14+
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A mechanism for lifting heavy objects, reproduced from a Leonardo da Vinci drawing, using reciprocating lever, wheels, and gears to lift objects no glue no paint no batteries 14+