The set consists of a magnetic field box and a magnetic field plate, both filled with a viscous liquid and iron filings, as well as 2 bar magnets and a horseshoe magnet. In the box, a magnet is placed in the middle so that the iron filings align with the magnetic field lines. Similarly, a magnet can be placed on the magnetic field plate, after which the iron filings align themselves with the magnetic field lines.
Box: 76x76x76 mm.
Plate: 91x157x9 mm.