Description
Hand-cranked cam turning against both a straight follower and a lever follower
Wooden wheel-and-axle simple-machine model on a 9
this magnified animal cell model reveals organelle ultrastructure and cellular organization for advanced biology instruction
Five-pulley set of tandem low-friction plastic pulleys at 25
Alnico Cylindrical Magnet, 37 x 9mm Material_Copper Hand-cranked cam turning against bothPink dots mark opposing poles on this 37 x 9mm Alnico cylinder pair, supplied with steel keepers and a cardboard storage box for sustained field strength between hands on experiments.
Exchange/Return Notes
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- Final sale items are not eligible for returns or exchanges.
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