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Review on πŸ”§ GEARWRENCH Feeler Gauge Set with 12 Blade & 6 Wire Spark Plug Gap - 164 by Adam Nelson

Revainrating 5 out of 5

On the one I had, I relied on valve timing.

The gauges were surprisingly accurate. When I received this I was using a micrometer and expected the gauges and split wires to be larger or smaller due to the price of the item. I was quite surprised to find that a set of machine micrometers had an error of several ten thousandths (0.0001). Because they are so close together I feel confident enough to use them for valve adjustments when rebuilding my engine.

Pros
  • Made in the USA
Cons
  • Quick Start Guide