Product description
Cyclus Tools Control Gauge for Derailleur Hanger black (black)
This product’s description has been automatically translated. Please excuse any mistakes.
Use this device to check and correct the exact geometric position of the derailleur hanger at the dropout.
To do this, mount a rear wheel in the frame and remove the rear derailleur if necessary.
Remove the nut from the threaded spindle of the jig, screw the tool into the derailleur hanger as far as it will go and lock it with the nut (SW 17).
Now check the even distance to the rim at several points on the wheel circumference (measuring pin).
If you find any differences, the derailleur hanger must be adjusted accordingly.