Mark Lindsey Finds Defective Glue Solenoid Valve

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 Mark Lindsey Finds Defective Glue Solenoid Valve In Seconds Subject:   Re: Thank You Hi Bob, Please feel free to use anything I’ve said about the Mag-Probe or paraphrase if needed.     (and, nand, or nor gates etc.) A PLC allows you to make changes to a circuit through software...