3-30 GPM ELECTRONIC DIGITAL FUEL METER Brand new, GPI model 01A31GM electronic digital fuel meter for measuring in gallons both batch and cumulative totals. Use on gravity or pump flow systems. Designed for use with gasoline (up to 15% alcohol blends such as E15), diesel fuel (up to 20% biodiesel blends such as B20) and kerosene. Features include aluminum housing, turbine rotor meter design, four digit LCD display, and cumulative or batch totals with batch total resettable to zero. Operates on 2 AAA batteries. Automatic shutoff after 1 minute of non-use to conserve power.