... USA Gallon, Imperial Gallon, Oil Barrel, USA Liquid Barrel, Imperial Liquid Barrel, Million USA Gallons. User configurable.Totalizer7-digit ... totals for net, positive and negative flow respectivelyLiquid ... , other 3 models for optionalTransducer Cord LengthStandard 2x10 meters, optional 2x 500 metersPower Supply3 AAA Ni-H ...