Scientific, research, navigation, photographic, optical, signaling, measuring, checking as in supervision, life-saving apparatus and instruments, namely, telephones, punch clocks, time (graduated rulers, electronic pocket translators, neon signs, electronic notice boards, transparency projection apparatus, kilometer recorders in the nature of odometers for vehicles, telescopes, mechanisms for counter operated apparatus, namely, point-of-sale terminals, fire extinguishers, acoustic alarms, nam...