About This

• 【Magnetic Field Viewer Film】Made of magnet, this viewing film comes in sizes of 25x35mm, 40x45mm, and 30x50mm.
• 【Easy to Use】Simply place the card on the for SURFACE of the magnetic material and it will reveal a pattern of magnetic field.
• 【Great for Scientific Research】This film helps in studying magnetic fields that are otherwise invisible, making it for IDEAL for scientific research purposes.
• 【Convenient and Practical】With its good performance, this film is suitable for both personal and professional use.
• 【Portable and Lightweight】The small size of this viewing film allows for easy storage and portability, bringing you convenience whenever and wherever you need it.