Performance Tool 15-Blade Thickness Gauge
9 thickness blades 2″ long and 6 flat 1″ long spark plug blades.
Decimal and metric sizes.
2″ steel rule.
Electrode adjuster.
Straight Blade SAE Sizes: .002, .003, .004, .006, .008, .010, .015, .017, .018, .019, .020 and .025″
Straight Blade Metric Sizes: .05, .08, .10, .15, .20, .25, .38, .432, .457, .483, .50 and .63 mm
Flat Blade SAE Sizes: .020, .025, .028, .030, .035 and .040″
Flat Blade Metric Sizes: .50, .64, .70, .75, .88 and 1.02 mm