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Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus.
controllers and parts therefor, for metal-forming presses-namely, automatic electronic controllers, relays, optical sensors, electrical sensors, magnetic sensors, electronic counters, treadle lock assemblies, switches, and gear assemblies for driving switches; peak strain monitors; electronic presence-sensors for controlling machines, actuating alarms or performing some other control function; opto-electronic presence-sensors; pressure transducers; depth sensors; multi-channel data acquisition circuits comprising multi-channel signal conditioners with switching functions and digital indicators; meter-indicators combining digital readouts with signal conditioners for digital controllers; signal conditioners and signal controllers for interfacing pressure transducers, load cells, and pressure transmitters with indicators, recorders, controls or alarms; and load cells for measuring tension or compression forces