Scientific apparatus and instruments including scientific apparatus and instruments for use in metallurgy; nautical, surveying, electric apparatus and instruments not included in other classes, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision) apparatus and instruments; apparatus and instruments used in connection to disposable immersion probes for use in liquid metal including those for oxygen measurements not included in other classes; life-saving and teaching apparatus and instruments; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines, and mechanisms for coin-operated apparatus; cash registers; calculating machines and data processing equipment; fire-extinguishing apparatus