
WARNING: CHOKING HAZARD - Small parts. Not for children under 3 yrs.
This principle is behind the operation of many everyday items, such as the "rack and pinion" system that steers a car. This classic wooden model offers children a basic concept of the laws of physics. Desktop sized with a length of 15-3/8" and a gear diameter of 4-3/4" outside diameter (4-1/8" inside grooves of teeth)
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