I'm turning square wood blanks down to dowels on my rotary axis using continuous turning. Usually when I'm doing stuff on the rotary axis it's artwork and accuracy isn't necessary. With these dowels, I need them to be pretty accurate. I found that the difference in dowel diameter from the headstock end to the tailstock end was off by 0.026 inches, which is pretty large. The tailstock on my Avid rotary setup has some adjustment capabilities, of course, but the adjustments are sort of fiddly and not very objectively measurable on the tailstock live center. I did what I could but just couldn't get it dialed in very accurately.
I went through the process of 2-D volumetric adjustment as published so far. This is pretty simple as there is only one axis to adjust for the rotary setup. I measured the difference in dowel diameter at one inch intervals from the headstock. This diameter difference is twice the adjustment needed in the Z-dimension. So, I divided by two and entered the values in the X-Tab file, interpolating for the half inch values that table requires. I turned a few more blanks and found this worked really well.
Here's a table of the results: