Scientific, surveying, optical, weighing, measuring, signaling, and checking apparatus and instruments, namely, fiber optic meters, fiber optic instruments, namely, fiber optic light sources for use with fiber optic test meters, optically isolated adapter for printers and remote control devices, optically isolated external trigger probes for use with electronic measures; Electronic test and measuring instruments and devices and electronic test tools, namely, digital troubleshooting systems comprised of computer hardware and software used to diagnose and analyze electronic devices and computer hardware, electronic meters for testing automotive electrical systems, instruments for regulating, analyzing, and controlling electricity, temperature, humidity, and power, namely, current measuring clamps; Electronic monitors and measuring devices, namely, electronic meters for analyzing the quality of electrical power, and identifying electrical signals in electrical circuits; Temperature profiling systems comprised of thermocouples and computer software for analyzing temperatures and logging data in the field of electronics manufacturing; Measuring apparatus for temperature and humidity levels in gases and solid substances; Thermocouples, thermometer readout devices comprised of thermometers and digital readout units;. Thermometer calibrators, temperature and humidity meters not for medical use; Electrical measuring and testing devices with electrical standards settings, namely, voltmeters, ammeters, and ohmmeters; digital multimeter, and paperless recording devices sold as a unit; Diagnostic equipment, namely, an optical source and power meter for measuring optical loss in fiber optic cabling systems; Measuring and calibrating instruments, namely, fluid flow calibrators and meters; electronic circuit parts and accessories, namely, digital circuit adaptors, digital circuit connectors and digital circuit cables; Test leads; Voltmeter probes, oscilloscope probes, and battery packs; Meters, namely, temperature meters and microamperage meters for monitoring heating ventilation air conditioning units; Infrared thermometer for temperature measurement without contact; Electrical testers, namely, voltage testers; Electrical insulation testers; Digital multimeters; Calibrators, namely, calibration devices for calibrating pressure transmitters, thermometers, thermocouples, flow control valves; Power quality meters; Recorders, namely, electronic data logger for recording voltage, amperage, and power measurements; Recorders, namely, electronic and digital voltage and power quality recorders and voltage and power event recorders; Analyzers, namely, electronic analyzers for measuring and testing power; Gas-flow analyzers; Safety equipment, namely, electronic electricity analyzers; Timer analyzers, namely, electronic analyzers for measuring time, frequency and phase; Counter analyzers, namely, electronic analyzers for measuring time, frequency and phase; Air quality analyzers for measuring temperature, velocity, humidity, carbon dioxide, carbon monoxide, and airborne particle concentrations; Particle analyzers; Carbon monoxide analyzers for measuring carbon monoxide levels; Temperature devices, namely, probes, sensors, transmitters, and microprocessor-based infrared temperature measurement units comprised of thermometers and thermocouple probes; Calibrators for calibrating pressure transmitters, thermometers, thermocouples, flow control valves, flow transmitters, temperature transmitters, and level transmitters; Temperature devices, namely, temperature indicators in the nature of temperature measurement, recording, and logging devices; Thermometers; Thermometer probes for non-medical use; Laboratory equipment, namely, temperature fluid baths; Humidity meters; Timers; Time counters, namely, electronic tools for measuring time intervals, time rise and fall, time periods, duty factor, frequency, pulse width, count totalization and phase; Ratio counters, namely, electronic tools for measuring frequency ratios, voltage ratios, infrared ratios, calibration test ratios, temperature ratios and resistance ratios; Frequency counters, frequency burst counters; voltage counters, namely, tools to count voltage, continuity and current; Rise and fall time counters; Electronic data loggers, namely, data acquisition instruments for collecting, storing, monitoring and analyzing equipment performance data comprised of hardware, software and portable and/or networked data logging acquisition units; Measuring apparatus, namely, clamp meters for measuring electricity; Electric current probes; Current clamps, namely, electrical current clamps for testing and measuring electricity, currents and voltage; Air quality measurement instruments, namely, electronic monitors for measuring temperature, velocity, humidity, carbon monoxide, carbon dioxide, air velocity, air flow, air pressure and differential pressure; Air quality particulate measurement instruments, namely, particle counters and electronic particle source locators; Electronic based instruments for measuring temperature and humidity levels; Electrical test, measurement, and safety equipment, namely, phase rotation meters; Infrared and thermal imagers not for medical use; Infrared temperature measurement instruments, namely, temperature sensors; Copper cable testers and analyzers; Fiber cable testers and analyzers; Wireless network analyzers; Equipment for testing biomedical instrumentation and software, namely, automated biomedical equipment test systems comprised of hardware, software, and data recorders for monitoring and inspecting the performance and electrical safety of biomedical equipment; Equipment for testing medical devices, namely, blood pressure simulators and patient simulators for use in testing medical equipment; Electronic pressure monitors, namely, atmospheric or barometric pressure monitors; Thermo-hygrometers; Ultrasound watt meters; Electronic gas flow analyzer, namely, hardware and software for analyzing gas flow in ventilators; Clamp meter accessories, namely, electrical testing leads, electrical current probes, rogowski based current probes, inductive current probes, hall effect current probes, and electrical connectors in the nature of crocodile, alligator, bus bar, and piercing test clips, sold separately or as a unit with clamp meters for measuring electricity; Carrying cases specially adapted for the above mentioned goods; All of the foregoing goods sold separately or in various combinations