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Use the set to measure spark plug gaps and other ignition clearances from 0.010 to 0.045" (0.254 to 1.143mm).
Six wire gauges check spark plug gaps, and 12 straight blades check other clearances. It includes a double-ended electrode tool for easy adjustments.
Includes: double ended electrode tool for easy adjustments.
Blade length: 3-5/16".
$10.53