Parllelogram of Forces Apparatus

To verify the relation between forces acting at a point. Also shows the static equilibrium under the effect of various forces.

A Wooden board of size about 50 x 60cm, with wall brackets, two frictionless aluminium  pulleys, 50mm diameter, on clamp, for mounting on board in any desired position. Complete with three mass hangers and 12 slotted masses, each of 50gms of iron nickelled.