Многоразовый дисплей с рисунком, портативная мини-пленка для обнаружения, профессиональное наблюдение 50x50 мм, инструмент для просмотра карт магнитного поля, прочный

Description:
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.
It can be used for quality control, product demonstration, reverse engineering, authentication and educational purposes.
Compact and portable size, lightweight, convenient to carry with you.
Wonderful educational tool to stimulate our interest in science.
Magnetic field viewer is a micro-encapsulated film which makes user view a static magnetic field.
The highly flexible film suit for magnetic surfaces with any degree of convexity or concavity.
Specification:
Material: Plastic
Color: Green
Size: About 50x50mm
Package includes:
1pc x Magnetic Field Viewer
Note:
1. Due to the light and screen difference, the item's color may be slightly different from the pictures.
2. Please allow 1-2 cm differences due to manual measurement.