All home made.
Screws, nuts, string, two pendulum needles (from windshield wipers), printed scales and some square, U and L shaped bars.
The front and rear transverse bars have notches at exactly the same distances, this makes a perfect square.
The exhaust tip is quite handy for supporting the rear and the grill for the front.
Once left and right sides are equidistant you have two lines exactly parallel to the center drive line of the car.
The initial calibration was quite time consuming, but once set-up it’s very simple to use.
Ride height tools were used ofcourse.
Accurate to 0.5mm and 0.25°
The car now drives straight !