Clearly observe the patterns of the magnetic field.
Place the film as close as possible to the magnet/item to observe the pattern changes.
Reusable and automatic recovery.
The stronger magnets, the better the results.

Product Name: Magnetic Paper/Magnetic Field Viewing Film /Magnetic Field Viewer/Magnetic Field Demonstrator
color:Brown yellow
Material:Magnetic Nanoparticles
size:10 x 10cm

Package Contents:
1 x Magnetic viewing film