FLOW METERS FOR MEASURING ENERGY, MASS, VOLUME, PRESSURE, TEMPERATURE OR FLOW RATE OF FLUIDS; FLUID CONTROL APPARATUS; ELECTRICAL APPARATUS FOR RECORDING MEASURING SIGNALS GENERATED BY FLOW METERS; ELECTRICAL AND ELECTRONIC APPARATUS FOR STORING DATA INFORMATION INDICATIVE OF FLUID FLOW; ELECTRONIC DATA INFORMATION DISPLAY APPARATUS; AND ELECTRONIC APPARATUS FOR DISPENSING PREDETERMINED LIQUID QUANTITIES