OEM 25023 Combination Tune-Up Feeler Gauge
This Tune-Up Feeler Gauge consists of six brass blades measuring .006-inch (.152mm) to .016-inch (.406mm); 12 steel blades measuring .010-inch (.254mm) to .026-inch (.660mm), 6 wire gauges measuring .025-inch (.635mm) to .045-inch (1.143mm), and 1 electrode adjusting tool.  Each hardened, tempered steel blade is laser etched with both inches and millimeters.