Use to set and measure spark plug gaps plus other ignition clearances from .010to .045 in. (.254 to 1.143mm). Six wire gauges check spark plug gaps in inches (.025, .030, .034, .035, .040, and .045) and millimeters (.635, .762, .864, .889, 1.016 and 1.143) 12 straight blades check other clearances in inches (.010, .012, .015, .016, .017, .018, .019, .020, .022, .024, .025, .026) and millimeters (.254, .305, .381, .406, .432, .457, .483, .508, .559, .610, .650, and .660) Includes a double-ended e
Item# : SPM17950527207
Model # : 164