Economy Differential Pulley Capacity_500mL providing the high-resistance leg of

providing the high-resistance leg of a voltage divider where current draw needs to stay in the microampere range

sized to fit tight laboratory frames while carrying heavy loads

Three-part skull model features painted muscle attachments and numbered details for cranial anatomy and muscle origin-insertion teaching

Used to introduce LED polarity and forward-bias behavior

Economy Differential Pulley Capacity_500mL providing the high-resistance leg ofEconomy three step plastic differential pulley with 20, 40, and 60mm sheaves on a single rod mounted piece, a low cost option for introductory mechanical advantage demonstrations.