9 SCIENTIFIC, NAUTICAL, SURVEYING, PHOTOGRAPHIC, CINEMATOGRAPHIC, OPTICAL, WEIGHING, MEASURING, SIGNALING, CHECKING (SUPERVISION), LIFE-SAVING AND TEACHING APPARATUS AND INSTRUMENTS; ELECTRIC APPARATUS AND INSTRUMENTS (AS FAR AS INCLUDED IN CLASS 9) AND ELECTRICALLY, ELECTRO-TECHNICALLY AND ELECTRO-OPTICALLY CONTROLLED DRIVES AND SAFETY DEVICES; APPARATUS FOR RECORDING, TRANSMISSION OR REPRODUCTION OF SOUND, IMAGES AND DATA; DATA RECORDING DISCS; AUTOMATIC MACHINES AND MECHANISMS FOR DATA-CARRIER-OPERATED APPARATUS; DATA PROCESSING EQUIPMENT AND COMPUTERS; FIRE- EXTINGUISHING APPARATUS