for demonstrating the principles of a parallelogram. The apparatus comprises a strong drawing board fitted with two hooks for fixing to a wall. The whole board is painted black. It is supplied with two nos. pulleys and 3 sets of iron chrome plated slotted weights of 50 gms.
To demonstrate the pressure of liquids varies with depth and not the shape of vessel with glass vessels of four different shapes, mounted on a base with plastic bowl.
