Hmmm I dont know of one off the top of my head but simply put this is how I do it. I measure the nib in the kit (part ink refill sticks out of) I use that measurement to size that end of my blank which I usually place towards the head stock. I turn just a tad under so my finish will flush it back to size. The opposite end I do the same with the centerband when that is complete I will sand and finish that piece. I put on the next piece and use the same measurement at the head of the lathe again for the other side of the centerband then move to the tailstock end and measure the finial and size the blank finish then assemble. Do not get pieces mixed up, I assemble the first piece off to avoid any mix ups or it could look real ugly!!! Hope this made sense