The Magnetic Field Demonstrator comprises a set of four transparent plastic plates (153mm x 76mm x 6mm) each plate has a matrix of 98 (14 x 7) small circular chambers each chamber containing an iron rod and functioning effectively as a plotting compass. The plates may be arranged in various ways e.g. as a single large two dimensional surface as faces of a cube etc. This way they may be used to show configuration of a magnetic field in one or two dimensions. The transparent nature of the plates also make them suitable for use on an overhead projector.Dimensions: 153mm x 76mm x 6mmPack Size: 4