[ Scientific, ] nautical, surveying, weighing, measuring, signalling, checking (supervision), life-saving [ and teaching ] apparatus and instruments, namely, [ spectrometers, ] marine compasses, distance measuring apparatus for surveying purposes, [ optical readers, ] weighing scales, digital signal processors, [ apparatus for recording, transmission and reproduction of sound or images; blank magnetic data carriers, blank recording discs ] data processing equipment and computers; computer sof...