Bosch ZEMO SU-E FS 12 Translation Of Original Operating Instructions page 171

7.5.5.2 Check
There is a different wear gauge for each chain,
depending on the manufacturer:
Figure 172: Example of a KMC gauge
Figure 173: Example of a SHIMANO gauge
Figure 174: Example of a SRAM gauge
Figure 175: Example of a ROHLOFF gauge
Figure 176: Example of a KMC digital gauge
MY22Z01 - 12_1.0_25.07.2022
Cleaning, servicing and inspection
1 Insert gauge between two chain links on the
right-hand side.
Figure 177: Gauge is inserted
2 Lower gauge down to the left-hand side.
Figure 178: Lower gauge to the left
 If the gauge does not fit between the links, the
chain is not worn yet.
Figure 179: Gauge does not fit
 If the gauge does not fit between the links, the
chain is worn and must be replaced. Contact
specialist dealer.
Figure 180: Gauge fits
170