HookS Law Spring Set, Set Of Five Different Springs Constants, The Set Has Five Different Springs Constants For In Depth Investigation With Above HookS Law Apparatuses.
Plastic Pulley, Low Friction, Single 50mm Dia, One (1) High Quality, Single Wheeled Plastic Pulley, On An Open Sided Steel Frame, With Hooks At Each End And One Low Friction, Ball Bearing Plastic Pulley With A Diameter Of 50 mm
Demonstration Compass, 10Cm Long Magnetic Needle On Compass Map, Easy To Demonstrate The Cardinal Points Of A Compass And Determine All Their Directions.
Pulley Plastic Ball Bearing Tandem, Double, Two Low Friction, Ball Bearing Plastic Pulleys With Diameters Of 38 And 50 mm, One (1) High Quality, Double Plastic Pulley In Tandem, On An Open Sided Steel Frame, With Hooks At Each End Carrying Two Low Friction
Pulley Plastic Ball Bearing Tandem, Triple Triple Plastic Pulley In Tandem, On An Open Sided Steel Frame, With Hooks At Each End Carrying Three Ball Bearing Plastic Pulleys With Diameters Of 25, 38 And 50 mm, Inner Gap Of Pulley: 3 mm, Overall Length Is 17.6 Cm