●Rapidly, accurately, safely, conveniently to judge the quality of ignition system, depends on difference types of car condition and adjust the different gaps.
●To judge the quality of coil according to spark color and distance.
●The car factory choose the appropriate coil depends on engine and ignition system.
●The airtight design to prevent the high volts leakage.
●Cylinder Pressure: 9.5:under, 9.5:1-10.5:1, 10.5:1-11.5:1
●Adjustment Range: 1CM, 1-2CM, 2.5CM