Test Weights of 2kg down to and including 100g are made of high quality past iron. Specification followed is National Standard Commission and /or British Board of Trade. Shape is truncated hexagonal pyramid. 2kg down to and including 100g have one round loading hole tapering outside in the centre of the underside. The weights are finished smooth and free from pits, blow holes and other defects. Weights are protected by a corrosion resistant paint of black colour. The error in excess permissible for adjusted new weights shall not exceed its limits.