9 Scientific, surveying, photographic, optical, weighing, measuring, signalling, checking supervision, and teaching apparatus and instruments, namely, metallurgical microscopes, surveying chains, photographic cameras, optical lenses, weighing scales, measuring lasers, signal whistles and educational software in the field of engineering; apparatus for recording, transmission or reproduction of sound or images; blank magnetic data carriers, blank recording disks; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishers; installations and apparatus for controlling, measuring, regulating, weighing, metering for metallurgical and iron and steel installations, especially for valves, gates, safety valves and machines and apparatus for controlling gas flow rate, namely, electronic controllers, flow meters, gas flow regulators and weighing scales; pressure probes, namely, ultrasound probes, not for medical use; pressure indicators; pressure measuring apparatus, namely, pressure gauges; sensors, especially gas flow sensors; electrical and electronic installations for remote control of industrial operations, and especially for valves, gates, safety valves and machines and apparatus for controlling gas flow rate, namely, computer hardware and software for remote control of gas flow rate; gas testing instruments; electric and electronic monitoring apparatus, namely, electronic flowmeter monitors; gas monitoring apparatus, namely, sensors for detecting the presence of gas and measuring gas concentration; installations and apparatus for controlling, monitoring measuring, regulating, weighing, metering for blast furnace installations and for iron and steel installations, namely, temperature controllers, electric meters; profilometers especially for the iron and steel industry and the ferrous and non-ferrous metal-working industry; probing installations and apparatus, namely, probes for testing integrated circuits; gas probes, namely, sensors for measuring gas concentration; video cameras; optical apparatus and instruments, optical scanners, optical glasses and frames; apparatus and instruments for measuring physical parameters, in particular, temperature, pressure and humidity, and for chemical analyses not included in other classes, namely, temperatures sensors, pressure gauges, humidity measuring sensor and liquid chromatography apparatus; computer apparatus, namely, computer hardware and software, computer interface boards for controlling, regulating, simulating, viewing and monitoring parameters of industrial installations, environmental protection installations, energy production, distribution and transmission installations and machines and components thereof; computer programs, in particular for controlling, regulating, viewing and monitoring processes in industrial installations, in environmental engineering installations, power plants and machines and components thereof; computer programs for simulating and viewing industrial installations, in particular metallurgical installations, environmental engineering installations, power plants, machines and apparatus; optical fibers; media for programmed and non-programmed data, namely, prerecorded digital discs featuring software for engineering design; data transmitting antennas; optical data media, namely, blank optical disk drives; transmitters of electronic signals; objectives lenses for cameras; optical lenses; processors being central processing units; chips being integrated circuits; printed circuits; integrated circuits; interfaces for computers; electric and electronic sensors; detectors, namely, metal detectors, electronic ultrasound flaw detectors; pressure sensors; heat sensors; computer software, recorded, namely, for automated manufacturing design; recorded computer programs for three-dimensional image recognition and processing; radar apparatus; electronic notice boards; water level, gradient, electrical loss, temperature and speed indicators