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HERON'S ODOMETRON 2

This mechanism is adapted suitably in the wheels of a coach and record the distance that this has covered. The particular odometer has been manufactured according to the description of Vitruvius (v.10, k. 9) and is used for the operation wooden (horizontal - vertical) toothed wheels. This is and the basic difference from the odometer that it describes Heron of Alexandria, which uses interminable screws and gears.