The European Directive 2014/32/EU, better known as Directive MID (Measuring Instruments Directive), is a community norm responding to reasons of public interests, safety and order, environment protection as well as preventing consumer from false measurement, of levying taxes and dulie and of fair trading. All these application, which directly and indirectly affect the daily life of citizens in many ways, may require certified measuring systems subject to legal verification. The MID MI-005 involves measuring systems for continous and dynamic measurement of quantities of liquids other than water, particularly lubricant oils. The Flexbimec oil flow meter series MID MI-005 comply with metrological standards and requirements concerning accuracy as defined in the a.m. Directive and can be used therefore as approved meters also in legal transactions.