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; devices, namely, spectrometers, diffractometers, chromatographs, photometers, pH-meters, and microscopes for analyzing solids, liquids, gas, and vapor; devices, namely, semi-conductor memory units, electronic paperless recorders, disk-drives, tape-drives, solid-state storage media, namely, semi-conductor memory chips, blank tapes, and blank computer disks, 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 stimulators, and installations, namely, installations of the above instruments