About this item:
An economical set of 12 drilled balls for pendulum experiments. Set contains two each 25mm diameter balls of brass, aluminum, steel, wood, cork, and copper, in a plastic box for easy storage. All drilled balls feature 3mm countersunk holes so pendulum cord knots can be recessed.
Drilled Ball Set (Set of 12)
$110.00 Prix original
$104.50Prix promotionnel