• Pinpoint bad valves, worn rings, cracked cylinder walls, and blown head gaskets. Precision regulator has a combination M14 and M18 adapter on an 26" hose assembly. 2-1/4" gauge has one multi-colored bank for measuring low, moderate and high leakage, and a scale range from 0-100%. Second gauge (2-1/4") has a dual scale dial with ranges from 0-100 PSI and 0-7 bar. Allows monitoring of input air-line pressure.