Laboratory apparatus and instruments, namely, for the exchange of substances and heat, for use in screening for trichinella, radiation devices in the nature of ultraviolet, visible, or infra-red light boxes for the analysis of bodily fluids; Optical apparatus and instruments, namely, optical character recognition apparatus, optical inspection apparatus for industrial use; Measuring or testing machines and instruments, namely, temperature indicators, level measuring machines, bevels, instruments for measuring length, resistance and radiation, laser light scattering measuring machines, particle measuring machines, and luminescent measuring machines, apparatuses used by Air-Analysis Specialists to measure and test for airborne bacteria, particle counters for air quality measurement, clinical laboratory analyzers for measuring and testing blood and other bodily fluids, electronic apparatus for electropysiological measurement and testing of cells; Electric or magnetic meters and testers, namely, electric meters, electrical outlet tester, electronic sound level meters, electromagnetic apparatus used to generate or measure magnetic fields, circuit testers and magnetometers; Telecommunication machines and apparatus, namely, electric resistors, capacitors, and transformers, fiber-optic transceivers, fiber optic repeaters, converters and optimizers, wave division multiplexers, free-space optics transmission systems, switches including Ethernet switches and routers, fiber-to-the-home and ethernet-over-VDSL access aggregators, terminators and repeaters, and remote presence management products, namely, switches, and console, alarm, sensor and power management devices, remote control telemetering machines and instruments, switches and transmitters; Electronic machines, apparatus and their parts, namely, computers, electronic control systems for machines, electronic slot and bingo machines and replacement parts therefor