Michel,
The corner balance requires scales, the actual type is not critical. The devil is in the set up and execution for the particular use. A level surface is required Beyond that its, how much time the execution will take. Alignment is a little more complex, the Smart Strings is a slick, smooth concept that has been used for years, in fact, in the airplane world the symmetry check is part of the Annual Inspection on more than a few planes, so for cars its just a symmetry check with measurements and a few conversions from distance to degrees. Realize, how you achieve the factory dimensions is truly unimportant, different techniques will determine how much time is spent. For me time is only relative when I am paying for some one else's, I can afford to use caveman tools and processes. The pier blocks are placed outside the shadow of the cars perimeter in general position. Using the symmetry method find the centerline of the car and locate the blocks accordingly. I then triangulate the blocks using basic geometric techniques. I then determine the height of the centerline of the wheels and use scraps of wood nailed to the pier blocks to achieve the proper height. Pull strings and confirm symmetry with a tape measure. Its then a simple process of measuring front and back of the wheel rims to determine toe in and using the bubble camber gauge to determine camber.
Smart Strings:
https://www.pegasusautoracing.com/group.asp?GroupID=SMARTTOOL
Bubble camber:
Intercomp Racing Bubble Caster Camber Gauges 102010 - PowerSportsPlace.com
Details:
Amazon.com: How to Make Your Car Handle (9780912656465): Fred Puhn: Books
Intercomp:
http://www.intercomp-racing.com/category/Alignment_Equipment.cfm
Pier blocks and string:
You figger that one out
The difference between this method and using a $15K machine is time and some measure of total accuracy. I can get my car within the factory +/- specs so that is close enough for me. I got my Intercomps on eBay for $500.00, looked brand new without a scratch. My bubble camber gauge came from England, so I am sure that you could source any and all via the internet and have them ship down under. Sorry no pics, when I am in the zone, distractions like cameras are not even thought of, and to be quite honest it wasn't until this forum that I thought anyone would be even remotely interested. When I have tape measures and calculators out even my dogs eyes glaze over, much less any human within a 20 mile radius.
eric