Supertek Newtonian Demonstration

This Newtonian Demonstrator is a large size to clearly explain the theory. Wooden frame consists of five nickel plated steel balls of uniform mass suspended from the frame. Includes instructions. Size: approx. 9″ L x 7″ W x 8″ H.   Special Shipping Information:  This item ships separately from other items in your order.  This item cannot ship to a P.O. Box.     Item is not eligible for expedited shipping.    You may initiate a return for unused items within 30 days, if the items are in original packaging with all original materials included with the shipment.