Magnetic Lines of Force Demo Set

Forget the mess and hassle of loose iron filings. This completely self contained and simple to use demonstration set allows for 3 dimensional viewing of the magnetic lines of force. Set includes: 
– Acrylic cube (measures 3 inches square) containing iron filings suspended in a silicone oil with a cylindrical magnet in the center. The cylindrical magnet can be removed from the acrylic cube. 
– Flat acrylic rectangle (measures 6 inches X 3.5 inches) containing iron filings suspended in a silicone oil.
– Horseshoe Magnet 
– Bar Magnet 
– Styrofoam Storage Box