measuring apparatus and instruments, namely, manometer, tachometer, acceleration meter, luminoflex meter, luminometer, vibration gauge, noisemeter, speed meter, dynamometer, and automatic controls and instruments, namely, pressure automatic control machine and instruments; fluid flow automatic control machine and instruments; fluid conditioning automatic control machine and instruments; liquid level automatic control machine and instruments; temperature auto-controller and instruments; auto combusting control machine and instruments; vacuum automatic control machine and instruments; [ calory auto-controller and instruments; ] and program controlling machine and instruments; electrical distribution or control machinery and implements, namely, switch, relay, circuit breaker, controller, connector, disconnecting switch, resistor, switchboard, fuse, lightning arrester, transformer, induction voltage regulator, inverter and reactor; batteries; communication machinery and instruments, namely, voice frequency transmission apparatus; cable carrier apparatus; power line carrier apparatus; open wire carrier apparatus; and carrier frequency repeater, transformer, surge protector, remote control and telemetering apparatus for remote metering, supervisory and station control, data acquisition and transmission, modem, and voice frequency apparatus; applied electronic machinery and apparatus and parts therefor, namely, computers, computer memories, computer keyboards, computer software for use in remote control and telemetering applications, computer peripherals, control processing units, blank magnetic discs and compact discs, data processing apparatus, electron tubes, semiconductor devices, monitors, monitoring apparatus for recovering from various error situations in token ring applications, for transmitting or recording continual measurements by signal, and for system operation, and electronic circuits; electric ozonizers; electrolytic cells; and electric welding apparatus