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Leonardo da Vinci often made maps, both for military purposes and for canal construction. He therefore designed several distance-recording devices, including an odometer. This is one of several variations on an instrument described by the Roman architect and engineer, Vitruvius, whose works were rediscovered early in the Renaissance. It was geared to drop a pellet into a box for a given number of revolutions of a wheel, thus computing the distance traveled. |
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