This apparatus gives students a visual understanding of the relationship between moment of force, the amount of force, and the length of the lever arm. By  simply adjusting weights fitted on scale lever to establish equilibrium.

Consist of aluminium lever scale of 25-0-25 cm with zero at the centre provided with  stone agate knife edge at the centre, two plastic clamps  which move along the aluminium scale  for carrying weights. Supplied without weights one 50g hooked weight, and one 100g hooked weight Mounted on heavy base.