Not a machine that can do it either,truth is that isn't ever going to make a difference. Heck,the Easton X10's are quite possibly the best arrow in the world with a record in tournament wins to prove it are only rated to .0015.

The nock alignment is the most critical and broadhead alignment are what matters.

Arrow straightness will give you some kind of idea about the spine consistancies,better straightness better spine consistancy but that doesn't hold true across the board either.

There have been alot of tournaments won with fatboys that are rated at .005.


I will say spine/tune are what yielded the results seen by brknarrow.