Thread: AVO two panel tester strange fault
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Old 11th Jun 2021, 6:44 am   #6
Craig Sawyers
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Join Date: Nov 2010
Location: Oxford, UK.
Posts: 4,991
Default Re: AVO two panel tester strange fault
The two panel tester predates the operating principle of the later single-box AVO valve testers, and works differently.

Original 1938 patent attached.

Craig
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