13990-Universal Force Table
About this item -
For demonstrating the principle of the parallelogram law of forces and polygon of forces. a unit is a drawing board size: 75 x 60 cm fitted on two side pillars for standing. the board is supplied complete with two pulleys (clamp pattern) 3 x 50 gm hangers and 12 slotted weight of 50 gm, reel of cotton thread and a ring.