HD Visual Magnetic Field Viewer Card This handy card identifies the magnetic pole area of any magnetised surface. The viewing film is 45mm x 35mm wide (total card size is 90mm x 70mm wide) and is identified by AMF Magnetics product code MVCard. Product Description: The area between magnetic poles is indicated by a yellow "aura", while the poles themselves appear darker. The HD Visual Magnetic Viewer Card is a practical tool for learning about magnetism and how the magnetic field moves between the poles. The pole identifier contains iron filings, that naturally accumulate at the North and South pole areas and also shows areas of weaker field intensity on the magnet's surface. This viewing card is both educational and practical for identifying the direction of magnetism and the location of the poles. The viewer is ideal for students or anyone else who wants to understand the basic principles of magnetism and magnetic fields.
