5-30 GPM MECHANICAL FUEL METER Brand new, GPI model M30-G8N mechanical fuel meter for measuring in gallons both batch and cumulative totals. Use on pump flow systems only. 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, nutating disc meter design, four digit resettable batch display, seven digit cumulative display, field adjustable fuel calibration. Simple four-bolt connections that allow the meter to be mounted in multiple directions. Calibrated at the factory for diesel fuel use.