The document discusses fuel flow meters for cars that provide precise volumetric flow measurement of liquids. It describes the meters as positive displacement flow meters that can measure various liquids like fuels, petrol, alcohols, and more. It lists features of the meters like compact design, high accuracy, ability to measure high and low viscosity liquids, and stainless steel construction. Parameter specifications are provided for different models including flow range, connection size, accuracy, temperature range, pressure rating, and output. Materials of construction and medium compatibility are also covered.