... " 10-200mm best quality with good price. Diameter:10~200mmFeatures:High accuracy.wide range ,low reatabilityUniform rotator, small vibration,long working life ... should be clean and non-corrosive, preferably medium to high viscosityTypical Applications: Lubricating OilGreasesHigh Viscosity FluidsEpoxiesPolyurethaneFuelsSolventsChemicalsAdditives diesel oil flow meter with high accuracy