n20mike,

The checking depth does require a measurement of exactly where the parting line was cut into the caps.

Once you have this measurement corrected to "0" (the center of the bearing hole) you can then use the parting faces of the case as a measurement point.

I have had good luck getting to within .010 using this procedure when I have a CD number to start with.

I did not go into the gear patern checking, because if a guy has already set up a rear end he knows to always check the pattern, usually dozens of times onn the same gearset assembly!

Greg
[addsig]