Monkeys and their acceptance of loose tolerances has me doing my own. A carpenter's square and a tape measure is all that's needed. 1/4" in at the top of a 15" wheel is 1deg negative camber. Turning the tires left and then right, and comparing the camber change will let you check the caster. Most want the most they can get, but if you want the exact number, there are formulas on the net. My cars drive straight, don't wander, and the tires don't wear unevenly.