Originally Posted by XBeemerfool
Great idea even I can build....
Ummm...why can't you use it on a "snail-cam" bike??? Aren't the reference points the same???
You can use it on a snail cam axle, but you really can't do anything about it if it's misaligned.
I imagine there are a few ways you could even align it... one that comes to mind off the bat is to grind down the register pin a bit on the swingarm on the "long side" to even things up.
If that worked, and assuming the snail cams match, that would be the first and last time you'd need the gauge.