Magnetic Field Viewing Kit with Steel Filings

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.

Key Features:

• 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