devices, namely, flow meters, flow transmitters, level gauges, level transmitters, pressure sensors, pressure transmitters, thermometers, pyrometers for measuring, controlling, and adjusting process variables, namely, flow rate, density, level, pressure, temperature; and devices, namely, spectrometers, diffractometers, chromatographs, photometers, ph-meters, and microscopes for analyzing solids, liquids, gas, and vapor; devices, namely, electronic paperless recorders, disk-drives, tape-drives, solid-state storage media, for recording data; and, software for implementing and operating, managing, diagnostics and maintenance of electric or electronic devices, namely, flow meters, flow transmitters, level gauges, level transmitters, pressure sensors, pressure transmitters, thermometers, pyrometers, spectrometers, diffractometers, chromatoghaphs, photo-meters, ph-meters, microscopes, data simulators, and installations, namely, installations of the above instruments in factories and laboratories