The CR2032 tester in action

I dug up this image of the CR2032 tester with a coin cell inserted.

coin cell tester in action

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Electroscope update

The 9V attachable electroscope has been updated. The silkscreened date on the back for this version is 2014-08-24(!)

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CR2032 tester

CR2032 tester

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Toy Electroscope

Kaptonized

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