Demonstrate laws of magnetic attraction and repulsion. Consists of a stand with 5 magnetic rings sealed in plastic case to reduce wear and breakage. A kit of magnets and accessories in a storage tray contents : l One Horseshoe magnet, 100mm, with keepers. l Two ceramic bar magnet, 75mm long l Three ceramic ring magnet, 38mm dia. l Two plotting compasses clear both sides, 19mm dia. l One lodestone specimen. l One pack Iron Filling. l One each strip of Iron, Aluminium, Zinc and copper metal.