Feature:
Field Viewer Film Viewing Film Paper 25x35mm 40x45mm 30x50mm
and
Material: Made of magnet.
easy to use: Just place the card on the of the material and it will reveal a field of pattern.
Great for personal or scientific research. And it help us study fields that we can't see.
Application: for 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: Field Viewer Viewing Film
Color: Green
Type: 25x35mm,40x45mm,30x50mm
Package Includes:
1x Field Viewer Viewing Film