Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signaling, checking, life-saving and teaching apparatus and instruments, namely, weighing scales, water temperature gauges, boost gauges, vacuum gauges and exhaust gas temperature gauges, keyless entry system and keyless ignition switch system for automotive vehicles comprised of a microprocessor, electronic signal receiver, and key fob with electronic signal transponder; remote control transmitters ...