With the Geomag Mechanics Motion Magnetic Compass, you construct a functional compass based on magnetism and mechanics. The 35-piece set combines magnetic rods and metal spheres with mechanical components as well as an integrated ball bearing. Via a contactless transmission system, magnetic fields set the construction in motion above the enclosed compass rose. The included plastic elements are made from 100% recycled plastic. The set demonstrates how magnetic forces work and can be combined with other models from the Mechanics series.