Smithsonian Perpetual Motion Machine (51866)
Smithsonian Perpetual Motion Machine (51866)
Smithsonian Perpetual Motion Machine (51866)
Smithsonian Perpetual Motion Machine (51866)

Smithsonian Perpetual Motion Machine (51866)

  • Sale
  • $20.00





Build your own “Perpetual Motion” Machine.
Learn about the properties of Physics.
Powered by an invisible magnetic field.
You make it, you play with it.