I simply measure from back plate to nut.

Hi

I have made a very simple and cheap tool for checking the alignment. It is simply a wooden cross about six inches high with a base on for stability and about twenty foot of string through two small screw loops on the end of the arms.

After adjusting the chain, simply place the tool against theback of the rear wheel, pass the string along either side of the rear wheel, ensure that the string is taut and in gentle contact with the sides of the rear tyre, and hey presto, instant alignment check with the front wheel.

Simple, easy and costs bugger all :thumbup:

The best type of tool. It is not even ducati specific.

Bryn