Problem is you need a laser flat garage floor and you can't jack the front to get better access to nuts during adjustment as it twists & bu66ers up the alignment, I've got one of those magnetic camber tools Richard shows above and to be honest they ain't very accurate by the time you swop it from one side to another and try to read just half a degree
I just use it for 'roughing up' the geometry if I've had something major apart and then take it to the pro's for a 4 wheel jobbie
