ChainLineR
thingiverse
The ChainLineR is a simple gage that helps to quickly measure your bike chainline and check if it's appropriate for your Shimano, Sram or Campagnolo recommended chainline. Position the ChainLineR on your one symetrical element of your bike. Ideally your seatube or downtube. Read the measurement with the markings in mm. Notes: - some tubes could be asymetrical - 2x chainline is measured differently depending the manufacturer. Shimano use the inside of the biiger chainring tooth.
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