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Magnetic Pole Tester

Electronic magnetic pole testers make it easy to detect magnetic fields.
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Electronic Magnetic Pole TesterThe electronic magnetic pole tester with audible beep comes in handy whenever you need to detect stray magnetic fields on packaging, perform magnetic polarity checks, test coils, or assemble electric motors. It provides an instant zero-delay magnetic pole indication and is also readable in the dark and where access is difficult.Price: $16.15