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Magnetic Field Viewer Viewing Film Card Magnet Detector Pattern Display Membrane Magnetic Card Detector Y-50*100Mm Fangkenuo
Features: This product is easy to use. Place the card on the magnetic material and it will display the patterned magnetic field. Great for personal or scientific research. It can help us study the magnetic field that we cannot see. It can be used...
$7.46 $6.26 Delivery: $7.77
