Wheel alignment system.

摘要

An automatic wheel alignment system (10) for aligning the wheels of an automotive vehicle includes head units (18L, 18R, 20L, 20R) adapted for coupling to the wheels of the automotive vehicle and a hand held module. The wheel units provide angle information related to the alignment of the wheels of the automotive vehicle. The hand held module (16) is coupled to the wheel alignment units (18L, 18R, 20L, 20R) and provides information to an operator through a liquid crystal display. The hand held module (16) includes a controller and memory means. A keypad input is provided for receiving an input from the operator. The liquid crystal display includes a liquid crystal display matrix for forming an image. A contrast control means is coupled to the liquid crystal display and provides a contrast signal to the liquid crystal display. <IMAGE>