RANMEI High Quality Magnetic Field Viewer Film Magnetic Viewing Film Paper Multi-size

Feature: Magnetic Field Viewer Film Magnetic Viewing Film Paper 25x35mm 40x45mm 30x50mm brand new and high quality High Quality Material: Made of high quality magnet. easy to use: Just place the card on the surface of the magnetic material and it will reveal a magnetic field of pattern. Great for personal or scientific research. And it help us study magnetic fields that we can t see. Application: Good performance convenient and practical suitable for home and professional use. Lightweight Size: Portable and small size easy to store and carry bring you convenience. Specification: Material: Magnetic Field Viewer Viewing Film Color: Green Type: 25x35mm 40x45mm 30x50mm Package Includes: 1x Magnetic Field Viewer Viewing Film Note: Due to the difference between different monitors the picture may not reflect the actual color of the item. Thank you! Manual measurement please allow 1-10mm error. Thanks for your understanding.