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 :
i : Clear viewing of the invisible lines of a magnetic field
ii : Steel filings are sealed in a scratch-resistant, transparent viewing tray
iii : Includes 2 magnets (.75″ disc magnet and 1″ bar magnet) and filing-filled tray
iv : Magnets are rubber coated to prevent scratching on the outside of the tray too
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