Commercial Fuel Transfer Meter in Gallons: The Fill-Rite 6-40 GPM 4-Digit Mechanical Fuel Transfer Meter registers 6-40 gallons per minute with high accuracy for high-volume applications Durable Aluminum Construction: Built for longevity with corrosion-resistant cast aluminum, these heavy equipment refueling meters are perfect for agricultural, commercial, or fleet refueling Extreme Accuracy Meter: Nutating disc technology ensures +/-2% fuel flow precision with lifetime tracking for high-volume applications and precise record keeping with a user-friendly display meter Broad Fluid Compatibility: Our fuel transfer meters are compatible with diesel, gasoline, and oils, supporting inline, remote, and pump-mounted setups with easy installation The Fill-Rite Standard: Backed by our long, successful history, Fill-Rite provides quality and durable fuel and chemical transfer pumps designed and manufactured in the USA