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An antique Energex high frequency device used in quack medicine, turned into a leak checker with style.
A gift from Chris Clarke, Director of Operations at the Pittsburgh Glass Center 
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Here’s an example of using a more modern device, oudin coil. Same thing used in more expensive devices specific to leak checking that could cost you from $99-$200.
My friend Harold Lasswell was able to make a leak checker for under $40.
Example of Leaks |
DIY Leak Checker |
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