Rotating Platform, for gyroscope and moment of inertia demonstrations, Includes substantial support plates, heavy duty ballbearing axle, and six slip patches for safe use, Platform is 37.5cm in diameter
Hall'S Carriage, One-Piece Aluminum Wheels And Axles Mounted In Cone Bearings, For Dynamics Experiments, For Low Friction Operation. One Piece Plastic Body With Facility To Add Weights On The Top. Used With Inclined Planes, Size 13.5 X 7 X 3.5 Cm