MAGNETIC FIELD CHAMBER Economical Model, with unfilled chamber (0275) Demonstrates three dimensional nature of magnetic field associated with bar magnets. Comprises a hollow chamber of clear acrylic with a tunnel at its center to hold cylindrical bar magnets. The chamber has high quality iron filings, which aligns itself as per the magnetic field geometry of a magnet. Also allows magnets of other shapes to be investigated by simple positioning their poles adjacent to any side of the chamber. Qty :