Description
Stays clear! Steel filings are sealed in a scratch-resistant, transparent viewing tray. Includes rubber coated magnets (.75″ disc magnet and 1″ bar magnet) and filing-filled tray measuring 3.44″ D.
Clear viewing of the invisible lines of a magnetic field
Steel filings are sealed in a scratch-resistant, transparent viewing tray
Includes 2 magnets (.75″ disc magnet and 1″ bar magnet) and filing-filled tray
Magnets are rubber coated to prevent scratching on the outside of the tray too