Instruments for measuring, testing, and generating electronic and electrical parameters namely, voltage testers, current converters and current transmitters, resistance measuring instruments, frequency meters, capacitance boxes, electrical inductors, and signal processors; radio frequency signal tuners, oscilloscopes, testing and measuring equipment for use in testing the performance and efficiency of power plant equipment; Antenna parameter measuring apparatus; wireless communication test equipment, namely, passive intermodulation analyzers and sound level meters; Electronic testing equipment, namely, sound level meters; Scientific instruments, namely, electronic analyzers for testing thermal imaging systems for the presence of contaminants; bit rate error testing equipment, namely, electronic circuits for error correction; signal generators; radio frequency and microwave signal generators; oscillators; radio frequency meters; radio frequency signal sources; radio frequency amplifiers; sweep generators, namely, signal generators and thermoelectric generators; network and fiber installation equipment, namely, LAN (local area network) access points for connecting network computer users; CAT 5 fiber equipment, namely, optical fiber cables; metal and optical cable testers, namely, electronic test and measurement devices for use in the fields of networks and telecommunications, namely, instrumentation used to test and certify new and existing data and voice communication cable and coaxial cable; calibration equipment, namely, industrial calibration sensors; Testing and measuring equipment for use in testing the performance and efficiency of power plant equipment, namely, power demand analyzers, power quality analyzers, power quality testing equipment, power supplies, voltmeters; electronic devices for measuring electric current; radio frequency power meters; multimeters, namely, electrical outlet testers; frequency synthesizers; temperature measurement and environmental test equipment, namely, thermometers, not for medical purposes; phase indicators; pulse generators for testing electronic current; data generators, namely, electronic data recorders; electronic magnetostrictive equipment, namely, arbitrary wave form generators; electronic detectors for observing and measuring the infrared spectrum, namely, infrared detectors; microwave frequency meters; modulation frequency meters; electronic data loggers; data acquisition and control instruments, namely, Geiger counters; electronic instruments, namely, logic analyzers; capacitance boxes; industrial calibration sensors; plotters; recorders, namely, portable electronic recorder for measuring and recording multiple voltage, current and thermocouple readings from various transducers; and accessories, namely, electrical cables, probes for testing integrated circuits, and plug adaptors; and electronic test and measurement devices for use in the fields of networks and telecommunications, namely, instrumentation used to test and certify new and existing data and voice communication cable and coaxial cable; network analyzers in the nature of electronic magnetostrictive equipment, namely, wave sensors and wave analyzers