Antifreeze testers; Battery testers; Brake fluid testers; Circuit testers; Diesel oil emission testers; Ductility testers; Electrical outlet tester; Electronic ultrasonic test equipment, namely, ultrasonic flaw detectors, thickness testers and hardness testers, for non-medical use; Electronic and optical communications instruments and components, namely, communication link testers for testing communication links; Fuel pump testers; Smoke alarm tester in the nature of a cool burning smoke gene...