Front End Alignment

John Cailey said
How do you think alignment shops do it?? They align off the wheel, whether it be a string machine or a beam machine, they align off the wheel ( usually the rim lip area). Actually not as accurate as the area I am using. The area I am using is machined, as is the wheel area that is bolted to the hub or drum. Like all aluminum wheels, all machined surfaces are done in the same plane ( parallel to one another ). If all the surface areas I mentioned are clean and the wheel is not bent, the alignment will be on the $. Trust me, I used to do this for a living. :popcorn:

I think the MODERN alignment shops use equipment with electrical sensors to compensate for any wheel run-out, along with a lot of other things we can not measure without sensors and computers. Seeing you are only doing a two wheel alignment, the little bit of compensation run-out you may experience with your set-up is moot compared to not measuring thrust ,off-set and set-back.
I'm curios about your toe measuring methods and do you have a method for predicting set-back?