Our most complex gadget, the Archimedes uses a marble-lifting mechanism inspired by the Archimedes Screw. Watch as the marbles seem to magically appear out of the center and make their way down the two maze pathways. This fully assembled gadget is powered by 2-AAA batteries. Comes with 25 marbles.

The fully assembled Small Gear gadget measures approximately 4.0” x 4.0” x 5.5”.