The wear gauge shows exactly if a chain is still within the tolerance of 0.5% or 0.75% elongation. (the values most manufacturers recommend to replace the chain)
Made of laser-cut precision steel.
The improved CC-3.2 is longer than its predecessor and thus more accurate!
Extra narrow (also for Campa 11fach, thus for all chains on the market)
Permanent measurement marking (no detachment possible)