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Re: Magnehelic pressure differential gauges
Posted to Tool & Equipment Forum on 5/16/2023

James , mine read 0 to 25 millibars .It has 2 ports , one for low pressure , one for vacuum .it look like 2 or 3 inch of vacuum will read 25 millibars . Using a hand help vacuum / pressure pump , mityvac , if you apply pressure at the pressure port , 1 psi or ... Login to read more.