VEX Robotics 406 4207 Screw Lift Ball Machine by HEXBUG VEX 406 4207 P The VEX reg Robotics Screw Lift Ball Machine by HEXBUG reg teaches important scientific principals such as kinematics linkages and reciprocal motion P P Inspired by the original design of one of the greatest scientific minds of Ancient Greece this modern machine puts a fresh twist on the Archimedes Screw from the 3rd Century B C This system is time tested and still used by many industries to move small objects or
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