
The Equal Mass Slotted Weight Hanger by United Scientific is a stainless steel set of nine 10 g slotted masses and a matching 10 g hanger, totalling 100 g. Each piece is engraved with its nominal mass, and a central hole keeps the masses seated on the hanger. Physics teachers use it for Hooke's law, pulley, and force experiments that need equal, stepwise load changes.