This student force table is a complete set with these new features: -Dual scale that allows students to take readings either clockwise or counterclockwise; Four complete weight sets (each contains 2 of 5g, 4 of 10g, 4 of 20g brass slotted weights and a 20g brass weight hanger), four pulleys with clamps and two sets of strings that allows students to investigate the equilibrium of either three or four forces A bubble level to help students with the setup A lightweight durable table top and a sturdy cast iron support that allows both ease of use and accuracy. Table size is 16”, height is 15”, weight is 14.2lb. Instruction manual included. Ages 13+