26 TESTING APPARATUS FOR MOTOR VEHICLES AND COMPONENTS THEREOF-NAMELY, SPRING TESTERS, CLUTCH TESTERS, TIMING LIGHTS, ADVANCE CHECK TIMERS, REGULATING METERS, CAM ANGLE METERS, TACHOMETER TESTERS, IGNITION SYSTEM TESTERS, TESTING BELLS AND BUZZERS, ALIGNMENT TESTERS AND TORQUE TESTERS; WHEEL ALIGNERS AND BALANCERS