26 INDICATING, RECORDING, AND CONTROLLING INSTRUMENTS; NAMELY, ELECTRICAL METERS, SUCH AS VOLTMETERS, AMMETERS, [ WATTMETERS, FREQUENCY METERS; ] LIQUID-LEVEL MEASURING INSTRUMENTS, TELEMETERS, PRESSURE CONTROLLING INSTRUMENTS, THERMOMETERS, TEMPERATURE CONTROLLING INSTRUMENTS, FLOW METERS, FLOW CONTROLLING INSTRUMENTS [ MOTION AND OPERATION RECORDERS ] , PRESSURE-MEASURING INSTRUMENTS; NAMELY, PRESSURE INDICATORS AND RECORDERS; [ APPARATUS FOR INDICATING AND/OR RECORDING THE TIME AND DURATION OF OPERATIONS AND MOTIONS; THERMOELECTRIC COUPLES; PYROMETERS, HYGROMETERS, AND PSYCHROMETERS; ] APPARATUS FOR TRANSMITTING FLUID PRESSURES CORRESPONDING TO VARIABLE MAGNITUDES, PARTICULARLY TEMPERATURE, FLOW, PRESSURE, AND LIQUID LEVEL AND FOR RECORDING SAID MAGNITUDES IN RESPONSE TO SAID FLUID PRESSURES; [ PROCESS TIME-CYCLE CONTROLLERS; VALVES FOR MEASURING AND FOR METERING THE FLOW OF FLUIDS; GRADUATED CHARTS ] AND RECORD-MAKING INSTRUMENTALITIES; NAMELY, PENS, PEN ARMS, [ INK, DIALS, ] AND CHART-DRIVE MECHANISMS FOR USE THEREWITH; [ AND SELF-BALANCING POTENTIOMETERS ]
Trademark: 71591014
