Magnetic Field Observation Window
$49.00
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A clean and easy way to visualize magnetic fields! Place a magnet under the Magnetic Field Observation Window and watch as the magnetic particles form the same patterns as iron filings but without the mess. The entire frame is 9" (225mm) x 5" (126mm) x ½" (13mm), perfect for placement on an overhead projector!Magnets sold separately.
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$45
$49
(+$4)