Originally Posted by
GhostRider62
Chain wear absolutely 100% is not linear.
The easiest way to measure for me is hanging the entire cleaned chain against a new one. Measure in mm with one of those digital vernier caliper thingies. Makes the math easier.
My eyeballs are not so good at 1/32, they like 5 or 6 mm better
My "linear" comment was meant to be a contrast with the "go/no-go" mindset induced by chain checkers. I don't know that anyone has ever published research showing that the rate of chain wear somehow changes as the mileage increases, but perhaps you can share what you know.
There is no need to be able to see 1/32" since it is 1/16" that is considered the replacement point. That is easy to see in a 12" length of chain, even with a cheap ruler that has only 1/8" gradations. There's no need to remove, clean, and hand a chain to see if it is worn out. Just measure it on the bike.