Double Long Pulley, 2" and 1.5" Wheels Material_Acrylic sized for classroom balance experiments

sized for classroom balance experiments and physics mass demonstrations

and Lucite dielectrics for studies of capacitance

Lamp-house assembly dimensioned as the matched replacement unit for optical bench and light-source apparatus when the original housing reaches end of life

and screens

Set of eight steel tuning forks tuned to scientific pitch (C4 = 256 Hz) for classroom work on sound waves

Double Long Pulley, 2" and 1.5" Wheels Material_Acrylic sized for classroom balance experimentsUnequal wheel pulley with a 2 inch and a 1. 5 inch wheel at 5. 75 inches overall in a metal frame with end hooks, showing how different wheel diameters change mechanical advantage.