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

visible crankshaft

Hand-painted male pelvis model exposes the narrower male-specific proportions and pelvic inlet shape compared to the female pelvis for sex-difference anatomy teaching

spanning cell voltages up through high-tension supply outputs

this deluxe optics kit covers reflection

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.