Wheel alignment computer

Claim 1

APPARATUS FOR CONVERTING FIRST AND SECOND RELATED VARIABLES REPRESENTIG RELATIVE VALUES INDICATIVE OF THE CAMBER AND CASTER OF A WHEEL TO RELATED CORRECTION VALUES FOR ADJUSTING THE RUNNING APPARATUS OF A VEHICLE COMPRISING, IN COMBINATION; AN ELONGATED HOLLOW HOUSING INCLUDING A FRONT FACE MEMBER HAVING FIRST, SECOND AND THIRD WINDOWS DISPOSED THEREIN, AT LEAST ONE OF SAID WINDOWS BEING LATERALLY ELONGATE WITH RESPECT TO THE LONGITUDINAL AXIS OF SAID HOLLOW HOUSING, AT LEAST ONE OF SAID WINDOWS INCLUDING A PLURALITY OF LATERALLY DISPOSED INDICIA CORRESPONDING TO A RANGE OF VALUES FOR SAID SECOND VARIABLE AND ONE OF THE OTHER OF SAID WINDOWS BEING ADAPTED TO LOCATE A VALUE CORRESPONDING TO SAID FIRST VARIABLE, SAID HOLLOW HOUSING FURTHER INCLUDING A PAIR OF LATERALLY DISPLACED LONGITUDINALLY ELONGATED MEMBERS, EACH HAVING A PAIR OF GROOVES IN SUPPORTING ENGAGEMENT WITH THE TOP AND BOTTOM EDGES OF THE FRONT AND REAR FACE MEMBERS; AND A CARD MEMBER DIMENSIONED TO BE SLIDABLY DISPOSED IN SAID HOUSING, SAID CARD MEMBER INCLUDING A PLURALITY OF INDICIA ARRANGED IN ROWS ACROSS THE CENTER PORTION THEREOF, SAID INDICIA CORRESPONDING TO A RANGE OF VALUES FOR SAID FIRST VARIBALE AND HAVING A PLURALITY OF COLUMNS OF INDICIA, EACH OF SAID COLUMNS OF INDICIA REPRESENTING A RANGE OF VALUES OF CORRECTION VALUES TO BE USED IN ADJUSTING THE RUNNING APPARATUS OF A VEHICLE AND BEING DISPOSED ON SAID SLIDING CARD MEMBER IN PREDETERMINED RELATIONSHIP WITH THE ROWS OF INDICIA CORRESPONDING TO A RANGE OF VALUES FOR SAID FIRST VARIABLE.