Lang Tools (CLT-2) Cylinder Leakage Tester measures the ability of an engine cylinder to hold compressed air- using shop air pressure- and supplements a compression tester. The CLT-2 has a precision regulator, an M14 standard reach adapter on a 26" hose assembly, and an M14 long reach solid adapter. The 2-1/2" special gauge has one multicolored band for measuring low, moderate, and high leakage, and a scale range from 0-100%. The second gauge is 2-1/2" and has a dual scale dial PSI and bar, which allows a technician to monitor input air-line pressure.