JC3104 Standard Ignition Spark Plug Gauge
Range(mm/inch):
0.254-0.660/.010-.026″,
0.152-0.406/.006-.016″,
0.635-1.14/.025-.045″.
12 pieces long type A steel blades,6 pieces brass blades.
2 bars with 6 wires and a electrode adjuster.
Hardened spring steel blades.
