I used the QuickTricks alignment system to measure tow, camber, caster. Caster is the most difficult, but its still pretty easy to measure.
Sadly, my car was in alignment spec. Which does not explain why I have the inside of all of my tires eaten up. But the old control arm bushings do. So now I have to fix the control arm bushings AND get tires.
Measuring the difference between the front and back of the horizontal bar on both front tires yields some measure of tow. Caster is just the number of degrees you see when placing the level tool on the vertical bar. Camber is in this video: