Chain Drive with Tensioner Mechanical Demonstration Model Meters_Electrical and raised graduations with full

and raised graduations with full autoclave and dishwasher tolerance

spanning cell voltages up through high-tension supply outputs

and 60mm sheaves on a 4-inch mounting rod

Fitted with a grey hand knob for tightening and a small plastic pulley

providing dense uniform spheres for ramp-and-collision experiments where a heavier projectile is needed than the plastic marbles can provide

Chain Drive with Tensioner Mechanical Demonstration Model Meters_Electrical and raised graduations with fullTensioner 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.