Magnetic Field Demonstrator
This is a quick and clean way to visualize magnetic fields. The demonstrator is a transparent acrylic case that holds iron filings suspended in a fluid of mineral oil. When it is placed over a magnet, the field pattern can be viewed directly, or it can be placed on an overhead projector for classroom demonstration.
Shipping weight: 10.6 Oz., dimensions: 8.75″ x 4.75″ x .5″.