Precise alignment

Because I would be occupied by some public school event held every year before noon,  the fundamental wheel alignment scaling and adjustment on BC7 SUBARU Legacy LSi US Model would be performed this after noon after lunch, probably it would take long time till late at night with muscle works. Before that, see through tire outer surface observation from both frontal and rear directions reveals some minus thrust angle, 5 to 10 minutes value is imagined, so, understanding the exact state and in-depth working plan are required. The scaling would be done with burdening 65 kg weight on the driver's seat in order to reproduce the actual driving reality. The camber value would scaled by a pendulum device that can be shown 2 minutes as 1mm movement on the scale, the diameter of pendulum is decided intentionally at 1719,75 mm(r value). Horizontal direction of the wheel alignment would be done by a LASER pointer equipped Leveler with setting precise hub center adapter. The 3 dimensional inclination of wheel could be recorded by the different devices. In real environment of scaling ,recording and adjusting, the air pressure of tires would be risen up to the maximum level at 3,0 kg/cm2 avoiding the influence by the tire tread spot deformation leading to the variation of the datum obtained. All the element of uncertainty should be discriminated as much as possible.