14 Piece Solid Materials Kit for Physics Pack Size_5 Rotation to linear gear rack simple machine model converting Rotation to linear gear rack simple machine model converting circular gear motion into straight line rack travel Made of unbreakable Nylon and an inbuilt tare screw for zero adjustment Fourteen specimen solid materials kit in assorted shapes across brass and PVC for comparative density and material properties exploration
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14-Piece Solid Materials Kit for Physics Pack Size_5 Rotation-to-linear gear-rack simple-machine model converting