The EISCO PH0310 Inertia Balance Kit demonstrates the comparison of masses and helps a student understand the terms mass and weight.
A platform is supported on spring steel strips which is made to oscillate in the horizontal plane under various loads. Two aluminum trays 130 x 50 mm., held approximately 200mm apart on spring steel strips attached to their sides. One tray has holes to take three equal mass cylinders, approximately 100 x 25 mm, length x diameter. Three support pins to fit radial holes in cylinders.