Ammeters; Oscilloscopes; Voltmeters; Digital multimeters; Electrical circuit boards; Electron microscopes; Electronic memory card readers; Electronic ultrasonic test equipment, namely, ultrasonic flaw detectors, thickness testers and hardness testers, for non-medical use; Integrated circuits; Laser rangefinders; Light diodes; Signal generators; Surveying instruments; Voltage stabilizing power supply; Wireless transceiver radio