Item Number: 3153523
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A Self-Contained Viewer for Examining Magnetic Fields at Work
This plate is an excellent tool to view magnetic fields.The unit is comprised of a transparent plate having a matrix of small circular chambers, each chamber containing an iron rod and functioning independently with as a plotting compass. This self-contained viewer allows you see magnetism at work without the mess of using loose iron filings.
Size is approx. 10" x 10"