Hello,

I have recently bought a bike from an LBS. This was the first business transaction that I had with the shop. Anyway, it offers a free 50-point safety check, so I took my old bike in for an inspection. After a checkup, the mechanic recommended to replace the chain immediately. He said it so worn that I would risk further damage to chain rings and sprockets.

However, I have a "non-brand name" chain checker, and it indicates there is plenty of life left. I have attached two pictures below. One has 0.75 check and the other has 1.00. Please, let me know if the chain is worn as said by the mechanic.

Thanks for helping,