While using computer wheel aligners:
a. Symmetry angle measurements display thrust angle, rear wheel toe, and rear wheel camber.
b. Setback is the angle formed by a line at 90 degrees to the vehicle centerline at the axle attachment point and a line through the left and right wheel centers.
c. Wheelbase difference is an angle created by a line through the rear wheel centers and the thrust line.
d. Right or left lateral offset is an angle between a line through the left front and left rear tires and a line between the right front and right rear tires.