Ginsberg Scientific 7-1887 Force Table - StudentGreat force table for accurate study of forces, vectors, etc. Every physics classroom should have one! Table top is 40 cm (15. 8 inches) in diameter and mounted on an 16 cm (6. 3 inches) tall tripod base with leveling screws Supplied complete with, Centering Pin, four Clamp Pulleys, Centering ring with threads and hooks, four Slotted Weight hangers 100 gm, four set of 8 slotted weights, 2 of 100 gm, 3 of 50 gm, 2 of 20 gm and one of 10 gm. Graduated