9 SCIENTIFIC, NAUTICAL, GEODETICAL, ELECTRICAL, PHOTOGRAPHIC, CINEMATOGRAPHIC, OPTICAL, WEIGHING, MEASURING, SIGNALLING, CHECKING (SUPERVISION), LIFE-SAVING AND TEACHING APPARATUS AND INSTRUMENTS; APPARATUS FOR RECORDING, TRANSMISSION OR REPRODUCTION OF SOUND OR IMAGES; MAGNETIC DATA CARRIERS, RECORDING DISCS; AUTOMATIC VENDING MACHANISMS FOR COIN-OPERATED APPARATUS; CASH REGISTERS, CALCULATING MACHINES, DATA PROCESSING EQUIPMENT AND COMPUTERS; AND FIRE-EXTINGUISHING APPARATUS