Originally Posted by
DiabloScott
Nope. Chain checkers are quick, rulers are more accurate. You're doing it right - use the chain checker for frequent checks - no need to use the ruler until you get multiple chain checker readings over 0.75%. Then you can use the ruler until you get 12-1/16" to get the max life out of your chain.
This is how I do it.
I just found this thread. Just last night, I had the Park Tool CC-3 tell me my chain is .75% worn, but then I checked the chain with two stainless steel rulers, and it was okay. So from now on, I'll be keeping an eye on that chain by checking with the ruler every weekend.