Magnetic Field Viewing Film 4"x4", Magnetic Flux Display, Magnet Pattern Detector, Scientific Project Teaching, Reusable and Automatic Recovery - Brownish Yellow 4"x4" ship04 It is hard to be

It is hard to be warped

AKB75135401 Replacement Remote Control Applicable for LG UBK80 UP870 UP875 BPM35 BP175 Ultra HD Blu-ray Disc Player

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Magnetic Field Viewing Film 4"x4", Magnetic Flux Display, Magnet Pattern Detector, Scientific Project Teaching, Reusable and Automatic Recovery - Brownish Yellow 4"x4" ship04 It is hard to beMagnetic Field Viewing Film 4"x4", Magnetic Flux Display, Magnet Pattern Detector, Scientific Project Teaching, Reusable and Automatic Recovery Brownish Yellow Placing magnet behind magnetic flux viewing film changes color by magnetic level. Color change according to magnetic intensityColor Gauss50 100G Orange 100 150G Yellow150 250G Light Green250 300G Green300 500G Dark Green 600 800G Blue 900 1000G Dark Blue Film thickkness (m): 150~200Heat