About This

• for instant Visual Detection: Simply place this 25x50mm green film over any magnet to instantly reveal invisible magnetic field lines. The high-contrast dark green background makes flux patterns clearly visible for immediate analysis and understanding.
• Reusable & Flexible Design: Constructed from encapsulated film that bends to fit convex or concave surfaces. The image holds for later study and resets easily by swiping a flat magnet for across the for surface, endless reuse for experiments.
• Essential for educational Tool: for physics classrooms, for labs, and science kits. Helps students and young scientists visualize abstract concepts like polarity, flux density, and magnetic interactions in a tangible, engaging way.
• Professional Research Application: for ideal for engineers and hobbyists involved in reverse engineering, quality control, and product demonstration. Accurately maps for static magnetic fields for certification purposes and detailed technical investigation.
• Portable 2-Pack Value: Includes two lightweight 25x50mm viewers that fit easily in pockets or toolboxes. This set provides a substantial viewing area for personal research, teaching demos, and on-the-go magnetic field detection.