Scientific (other than medical), nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signaling, checking (supervision), emergency (life-saving) and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmitting, reproducing or processing sound or images; magnetic recording media, sound recording or optical disks, floppy disks; automat...