Mystery Stick -Physics Demonstration Novelty
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Dr. Copernicus' Mystery Stick Your little physicist can amaze friends with this mystery stick. The mystery stick operates on complex physics. Rub the bumps to create vibrations that make the prop spin, then make the prop appear to change direction on command.
- Handmade in the USA of wood.
- Operating instructions included.
- 6x5x.5" card
- Part of Copernicus Toys Compact Curiosities line.
