Hooke's Law New Style. Weight Hanger has red pointer. Slotted Weight, eight 20gm and six 10gm nickel plated steel. Spring is attached to the end of the rod to support weight hanger.
Hooke's Law New Style. Weight Hanger has red pointer. Slotted Weight, eight 20gm and six 10gm nickel plated steel. Spring is attached to the end of the rod to support weight hanger.