6-Piece Parallel Plastic Pulley Set, 50mm Diameter Material_Plastic Five-pulley set of 50mm single

Five-pulley set of 50mm single plastic pulleys on steel frames with end hooks

demonstrating how a crane lifts loads through the mechanical advantage of a large wheel turning a small axle

letting students plot resonance against length and back-calculate the speed of sound

this premium calorimeter delivers accurate specific-heat and heat-of-reaction measurements

Pea seed germination model traces cotyledon splitting

6-Piece Parallel Plastic Pulley Set, 50mm Diameter Material_Plastic Five-pulley set of 50mm singleSix pulley set with single, double parallel, and triple parallel plastic wheels at 50mm diameter in low friction ball bearing steel frames, sized for whole class compound pulley setups.