THE WA0520 TOE ANGLE COMPARATOR IS INEXPENSIVE.  THE EASY TO USE TOE ANGLE COMPARATOR PERFORMS AN EXTREMELY IMPORTANT FUNCTION IN MODERN WHEEL ALIGNMENT.  USED IN CONJUNCTION WITH EITHER WA0510, WA0511, WA0512, WA0513,  WA0515 OR WA0517 TO INSTANTLY COMPARE THE TOE ANGLE OF EACH WHEEL, SO THAT THE TOE IS SET EQUALLY ON EACH WHEEL.  IT ALSO ENABLES THE TECHNICIAN TO CENTER THE STEERING WHEEL AT THE HIGH SPOT OF THE WORM AND SECTOR GEAR,  THE POSITION TO WHICH THE STEERING WHEEL STRIVES TO RETURN.