SCIENTIFIC, NAUTICAL, SUREYING, ELECTRIC, PHOTOGRAPHIC, CINEMATOGRAPHIC, OPTICAL, WEIGHING, MEASURING, SIGNALLING (MARKING), CHECKING (SUPERVISION), AID LIFE-SAVING) AND TEACHING APPARATUS AND INSTRUMENTS; APPARATUS FOR RECORDING, TRANSMISSION, REPRODUCTION OF SOUND OR IMAGES, MAGNETIC DATA CARRIERS, ACOUSTIC DISCS, AUTOMATIC DISTRIBUTORS AND MECHANISMS FOR COIN OPERATED APPARATUS; CASH REGISTERS,CALCULATING MACHINES AND INFORMATION PROCESSING EQUIPMENT (DATA PROCESSING); FIRE-EXTINGUISHING APPARATUS