"Ward's Phenomena Lab Activities"

Set of 9 zinc-casted slotted masses with one hanger each of 50 g, total weight of 500 g. For use in physics experiments and demonstrations.

Spare or replacement weights for slotted masses sets. All weights are made of brass.

Set of 9 zinc-casted slotted masses with one hanger each of 20 g, total weight of 180 g. For use in physics experiments and demonstrations.

Twelve of the most widely used weights on a rack for convenient storage and transport.

High quality for the classroom.

Wonderful for elementary school learning.