Fuel-filling fair-balance for motor vehicle

The utility model relates to a fluid metering equipment, in particular to a high reliable filled-fuel calibrating scale for rechecking the commercial fuel from the urban gas station with a metering gauge. The utility model comprises a liquid metering gauge, an oil filling gun connector, an oil pipe connector, and oil tank components, wherein, the liquid metering gauge is connected with the oil filling gun connector through a thread joint, the other end of the liquid metering gauge is threaded with the oil pipe connector or the oil tank or the oil tank components. The utility model adopts the calibrated liquid metering gauge as the rechecking tool, through the excellent design, the motorized vehicle filled midway can obtain the real-time information of oil quantity filled, thereby guaranteeing the rights and interests of the customers.