9 ELECTRICAL CONTROL APPARATUS, NAMELY, SERVO-MECHANISMS; ELECTRIC MEASURING INSTRUMENTS, NAMELY, ELECTRICAL METERS, THERMOMETERS, AND SPEEDOMETERS; PRINTED, ETCHED, AND ENCAPSULATED CIRCUITS; SWITCHING ELEMENTS; COMPUTER EQUIPMENT, NAMELY, PROGRAM AND DATE STORAGE UNITS, PROCESSOR UNITS, MICROPROCESSORS, AND INPUT AND OUTPUT UNITS; AND SENSORS FOR SENSING VELOCITY, TEMPERATURE, PRESSURE, VOLTAGE, CURRENT, AND FREQUENCY