Ear plugs, processed glass (not for building), electric arc welding machines, metal cutting machines, electric welding apparatus, ozonisers, electrolysers, egg-candlers, cash registers, coin counting and sorting machines, Electric sign boards for displaying target figures, current outputs or the like, Photo-copying machines, Manually operated computing apparatus, Drawing or drafting machines and apparatus, Time and date stamping machines, Time clocks [time recording devices], Punched card off...