The water flow meter has an arbitrary rotation function, which is convenient for meter reading. The number display part above the water meter can visually display the total cubic number. The pointer below can meticulously record the amount of water below 1 cubic meter, accurate to 0.0001. This water meter is made of the highest quality materials, resistant to corrosion and condensation deposits. The instrument cover is made of brass and the bearing elements are made of high-quality steel, wear-resistant synthetic stones and other elements made of plastics. This DN15 water meter is equipped with 1/2" NPT couplings and cannot be connected to a hose with a 3/4" NPT . Unit of MeasurementCubic MetersGradeB NominalFlow-rate1.5Transitional Flow-rate0.12Minimum Discharge0.03Minimum Reading0.0001Maximum Reading99999Water Temperature040 Pressure1MPa If the water meter you received shows data, please do not be afraid whether it has been used. This is because we will conduct a quality inspection on the product before it is sent out. The data shown on the water meter is the data left during the quality inspection and will not affect the use. Hemobllo Water Flow Meter for Garden and Home Use, Measures in Cubic Meter Well-Designed 1/2" NPT Couplings Easy to Install Small Size Water Meter Specification Warm Tips