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Ball and Tube by Johnson Products
Ball and Tube by Johnson Products
Item Number: JO1402

$18.00



Qty:


Ball and Tube by Johnson Products

A steel ball is set on top of a small brass tube. The ball is obviouslylarger than the tube. Slowly the ball sinks down into the tube; then justas mysteriously it rises back to the top. Instantly both the ball and thetube are handed out for examination.


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