Chain Drive with Tensioner Mechanical Demonstration Model Meters_Electrical Fitted with a grey hand

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

and raised graduations with full autoclave and dishwasher tolerance

this deluxe optics kit covers reflection

5mm copper wire on a 5 x 4

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 Fitted with a grey handTensioner 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.