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ELECTRONIC INSTRUMENTS, NAMELY, DIGITAL PANEL METERS, DIGITAL PANEL CONTROLLERS, DIGITAL PANEL COUNTERS, AND DIGITAL PANEL REMOTE DISPLAYS FOR MEASURING, CONTROLLING, REGULATING, OR TABULATING VOLTAGE, ELECTRICAL CURRENT, PRESSURE, STRAIN, TORQUE, LOAD, TEMPERATURE, FLOW, TIME INTERVALS, FREQUENCY, PERIOD, REVOLUTIONS PER MINUTE, PHASE ANGLE, CUSTOM CURVE LINEARIZATION, RUNNING TOTALS, PHASE ANGLE SYNCHRONIZATION OF AC GENERATORS, THE DUTY CYCLE OF SOLID STATE POWER RELAYS, TOTAL FLOW THROUGH TURBINE OR DIFFERENTIAL PRESSURE FLOW METERS, AND SIGNALS FROM SHAFT ENCODERS TO PROVIDE SCALED DISPLAYS OF POSITION, LENGTH, OR ANGLE IN ENGINEERING UNITS