Detailed Product Description Fuel consumption flow meter(fuel counter;VZO4) Technical Brief of VZO4 OEM Rotary Piston Flow Meter ... For Fuel ConsumptionFuel consumption flow meterFuel consumption flow meter, fuel counter, VZO4Fuel consumption flow meter, remote LCD totalizerGN® Oil Volume Meter ... read data. 6.Total volume can not be reset7.High revolution,the last digit is 0.01L..