Intercomp Alignment Gauge

It doesn't really matter. You might do it with the wheel turned whichever way just to get access to the cam eccentrics. But I find it a little more convenient to be the center so you can watch the camber change.

Whatever you move out or in on one cam eccentric side of the upper control arm, you have to do the opposite on the other side cam eccentric to keep the same camber (no camber changes).

This my Longacre rim mount gauge doing an alignment on friend ns1rm21's hemi dart clone.