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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.
measuring systems and mountings for said measuring systems, especially interchangeable measuring systems and mountings for said interchangeable measuring systems, for use in chemical processing, comprised of electrochemical, conductometric and photometric measuring sensors for use in the measurement and analysis of ph-value and oxidation-reduction potential during food production, in the paper industry in breweries, in power stations, in pipelines and in vessels such as open or closed tanks, reactors, basins, or reservoirs; scientific measuring instruments, namely ph-meters, conductivity-meters, turbidity-meters, dissolved-oxygene-meters, flow-meters, pressure-transmitters, level-gauges, thermometers, humidity-gauges, viscosity-meters; electronic control instruments, control instruments, namely, control instruments for controlling or regulating chemical processing parameters, such as flow-rate, temperature, ph-value, pressure, level, turbidity, and dissolved-oxygene