Air/fuel ratio gauges; Antifreeze testers; Automotive measuring instruments, namely, water temperature gauges, air fuel/ratio gauges, boost gauges, vacuum gauges and exhaust gas temperature gauges; Brake controllers; Brake fluid testers; Diagnostic apparatus for identifying refrigerant type and purity in automobile air conditioning systems; Electronic apparatus for testing automobile engine oil; Fuel gauges; Fuel pump testers; Gasoline gauges; Leak detectors for vacuum pumps; Leak detectors f...