SamSuka
bigclive
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Inside the magnetic tester

This was a very destructive exploration, but I've now ordered a replacement.

https://www.youtube.com/watch?v=rXD3zIXNgU4

Inside the magnetic tester

Comments

Don't bin it !! CR2032 in place of the 2 AA's, wrap the whole thing in transparent heat-shrink and voila!! Good as new...

Gordo

It's rare to see one with polarity. Most are just a reed switch and a beeper.

Mike Page

Third light is for East and West polarity?

RonNona


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