Ball & Tube Mystery - Reverse Lock
Examinable BEFORE and AFTER You Perform It!
Show the solid brass Tube and solid steel Ball, that's clearly too big to fit into the tube.
You offer to show them a little trick, the Ball slowly sinks down into the tube!
For the little trick: The ball slowly rises back to the top of the tube!
- Immediately Hand Out the for Examination.
They try themselves, but the Ball won't fit in the Tube!
Everything is Examinable!