Magne-View® Film is a micro-encapsulated film which enables the user to view a static magnetic field such as commonly emitted by permanent magnets or dc electromagnets. Simply placing the film directly on the surface of the magnetic material in question can instantly reveal a magnetic field of any shape or pattern. The highly flexible film easily conforms to magnetic surfaces with any degree of convexity or concavity. Magne-View® is used across the globe for quality control, product demonstration, reverse engineering, authentication and educational purposes.Magne-View ® Film Specifications: Color - Green, Thickness - 0.006 inches Magne-View ® is a registered trademark of Magne-Rite, Inc.