Three-frequency Pendulum

Stainless steel frame. Back and forth movements with sintered metal plain bearings, self-lubricating. High-quality roller bearings made of chrome steel or stainless steel for rotating elements, low-maintenance, easy to replace, sealed. Glass bead blasted surface. Three heavy plastic balls on stainless steel cables, individually mounted, can be set in motion via a bracket with a stainless steel cable. Support post for explanatory board made of V2A.