HI, Im back..Isspro are the gauges i was trying to match up with the liquid filled manuel pressure gauge.. I purchased an electrical system for safe in the cab gauges.. The isspro system never matches up with my old pressure gauge ? Finley called Instrument Sales Service in portland or. Told him my concern , he suggested a high powered gauge that is certifier to be within 1 percent at 100 psi. The gauge is hooked up to the fuel liquid on a hose and disconnect fitting..My isspro elc system checked out just fine , you want the Elcric system for in cab use. I am pleased and recommend the Isspro system and gauges, Instrument Sales Service has my respect and buissnes also..Never mind my spelling its the thought that counts ... The Gov Holmes
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