Hook the Rohloff Caliber 2 into the chain as shown in Figure I. With a new chain the measurement finger (2) barely moves between the rollers.

Caliber 2

Usage Caliber 2 (Figure I)


The greater the wear, the deeper the finger moves into the chain. (Figure II).

Caliber 2

Usage Caliber 2 (Figure II)

If side A of the Rohloff Caliber 2 tool sinks in fully, allowing the Rohloff Caliber 2 to lie flat on the chain rollers (Figure II), the chain wear factor has reached 0.075mm per link. To protect ALUMINUM sprockets from premature wear, chain replacement is recommended at this time. If side S of the Caliber 2 tool sinks in fully, the chain wear factor is 0.1mm per link. The chain should now be replaced to avoid skipping and to prevent wear on STEEL sprockets.

More information over the Caliber 2 can be found in our download area on our website.