alignment tool camber, caster

I thought on our cars we want to set as much caster as possible (for radial tires), which is why I used Moog offset bushings on the UCA. You want the aft side of the UCA inward as much as possible and the fwd side out. You then must back off to get the desired camber. Most people want slight negative camber, which means the tops of the tires lean in slightly. Opposite from the factory setting which was slight positive caster (tops lean out, looks dorky). Since a judgement thing, I don't think the exact angle is critical, just balance them left & right. I adjust one side to "looks good", hold a carpenter's level vertical against the bottom of the tire and measure the lean-in at the top, then match the other side.

Final adjustment is toe-in, which is the main thing that affects tire wear and tendancy to wander (if any toe-out). Fairly easy to set that with a tape measure fwd & aft on the front tires (youtube).