US$ 88.99
5mm copper wire on a 5 x 4
visible crankshaft
providing dense uniform spheres for ramp-and-collision experiments where a heavier projectile is needed than the plastic marbles can provide
and raised graduations with full autoclave and dishwasher tolerance
Chain Drive with Tensioner Mechanical Demonstration Model Meters_Electrical 5mm copper wire on aTensioner pulley keeps chain engagement consistent on this hand cranked chain drive, viewable between clear plates so students watch sprocket teeth grip and transfer torque under load.
US$ 88.99
US$ 34.99
US$ 12.99
US$ 84.00
US$ 42.49