Wheel alignment

As a first step for precise scaling and adjusting on wheel alignment and axle geometric construction, ground level was checked utilizing Pascal's law. This is an indispensable procedure for adjusting vertical inclination of the wheels, especially for camber value setting. Showing in the picture, LASER pointer equipped device is used for measuring lateral direction of the wheels.
I have realized again the importance of establishing "Thrust angle" for any 4 wheel automobile. After adjusting right rear wheel in VW 1302 Super Beetle to minus thrust direction by extending left trailing arm length, the steering centric position had changed into left direction, counter clockwise direction 1 mm displacement on the steering column marking as imagined before this procedure. The centricity of the automobile meets with my own sense as usual leading to self sense of security by eliminating any symptoms to wondering while driving in various situations. I didn't know this truth and fact until I establish the wheel alignment and the axle constructive geometry. Cars of mass production are not in the circumstance to be adjusted on this important proposition because of a problem of production cost, so I am focusing on this point. The more precisely established wheel alignment, the better for astringent driving.