Wait that's the Bert Miller method-) I haven't used it. From what I remember it used a densiometer etc?

http://groups.google.ca/groups?q=aut...gle.com&rnum=5

http://groups.google.ca/groups?q=aut...gle.com&rnum=4

http://groups.google.ca/groups?q=aut...gle.com&rnum=3

http://groups.google.ca/groups?q=aut...gle.com&rnum=2

I'm not going to read it all but I think that's his pitch.

Me I use a colorstar 3000. Pretty cheap on the used market today.