I just put the car over the pit, cable tied the socket to the strut alligned with the outer face of the wheel rim, slackened off the bolts which allowed the wheel to tilt onto the socket and then re-tightened the bolts. Job done. 
Thanks was the socket 15mm in diamiter?
believe it was, thing is the idea is to measure first with this method and then replicate the measurement after the work is done when setting the camber position. This also assumes the camber was correct to start with.
Other variables are differant wheels sizes may sit further or nearer the strut.
In your situation i guess the way forward is to start with the 15mill dia socket setting and drop the car, drive back and forth a little to allow the suspnsion to find its ride position, then look visualy along the side of the car, you want the front to be very similar to the rear as far as camber angle goes. The recommended setting is 1.10 degrees hth