26 MEASURING AND SCIENTIFIC APPLIANCES-NAMELY, MEASURING TAPES, CALIPERS, MICROMETERS, STETHOSCOPES, VALVE SPRING TESTERS; GAUGES, CONSISTING OF FEELER, COMPRESSION, VACUUM AND TIRE GAUGES; WHEEL ALIGNMENT EQUIPMENT CONSISTING OF ANGLE COMPARATOR GAUGES, CASTER-CAMBER GAUGES AND TURN-TABLES, GENERATOR CURRENT INDICATORS, BATTERY CONDITION TESTERS, STARTER CURRENT INDICATORS, CAM-ANGLE TESTERS, PRIMARY TACHOMETERS, IGNITION TESTERS, LOW VOLTAGE TESTERS, SPARK PLUG AND CABLE TESTERS, GROWLER AND ARMATURE TESTERS, AUTOMOTIVE ENGINE TESTING EQUIPMENT CONSISTING OF D.C. AMMETERS AND D.C. VOLTMETERS