After setting up my alignment with this unit I went to a local store with a calibrated Hunter alignment stand and for $25 they will add it and give me a print out. Camber values were accurate with the leveling post! Caster isn't great, but I'm not surprised given that it's difficult to get accurate measurements without decent rotary plates. I don't have caster adjustment anyway so it's really good for camber adjustment and very easy and accurate for that. it is the same.