As well as that neat Gunson Trakrite camber gauge, Gunson also do a Trakrite wheel alignment gauge here:
http://www.gunson.co.uk/item.aspx?item=1812, which I have used quite a lot, and is pretty close to perfect, easy to use and relatively well priced too.
I can't understand any decent workshop admitting failure, just because the car is missing a wheel and a few cylinders.
