TRU COMPONENTS Magnetic field visualiser 507706 (L x W) 80 mm x 54 mm Magnetic field visualizer: (L x W) 45 mm x 35 mm

Magnetic field viewer card with protective case

The card makes magnetic field lines visible. The test magnet is simply held to the back of the card and the orientation of the magnetic field lines are shown on the front. The size of the magnet can be calculated by the measuring tape attached to the display window. The card works without electricty and is wear-free. Ideal for experiments, developments or use in schools.