Smart Water Meters from Istec Corp., of Roselle, N.J., take advantage of the newest technology to make meter reading and information transfer easier. They are a combination of a Multi-Wing flow meter and the Chip Card technology. This is the ideal solution for smaller sub-metering systems. It provides the most economical sub-metering system and eliminates transfer errors. The meter features a 6-digit liquid crystal display, which shows a non-resettable total in gallons.