Dropped $85 on a Park Tool chain checker and my old ruler does the same job

Grant Fisher · 2026-09-23T10:20:03.574911+00:00

Bought the CC-4 thinking it would speed up my tune-ups, but I still get the same 0.5 and 0.75 readings I got eyeballing chains against a steel ruler for a decade. The spring pin actually gets gummed up with chain lube and needs cleaning more often than the ruler does. Anyone else keep a cheap tool around just because the fancy one never earned its spot in the drawer?

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Dropped $85 on a Park Tool chain checker and my old ruler does the same job | Bicycle Mechanics - Chatter Central