Review on 🔍 Rohloff Chain Wear Indicator: A Reliable Tool for Measuring Chain Wear by Peter Zouhair

Inexpensive, fast, handy and fits into every tool box. A worn chain requires more power to pedal. One side of the tool measures chain wear on aluminum sprockets and the other side measures chain wear on steel sprockets. You can tell when the chain is wearing out by using aluminum side sprockets. The Shimano TL-CN41 sensor could be more accurate but is MUCH more expensive. It is just as accurate, but cheaper, to measure a lightly loaded chain with a ruler. But measuring chains all day is tiring, so bike shops assume Rohloff took RPG into account in his design. Every bike shop uses this tool. If you want accuracy, measure the chain with a ruler, but if you want the industry standard, this is the tool to buy.