FEATURES 1)Completely plastic shell, solid and robust design, long service guaranteed. 2)High quality materials fiberglass reinforced polymerization amine (UL NO.: E154352: SGS Report NO.: CE/2006/34019), corrosion resistance. 3) Pole ring magnet polymer coating as protection against deposits. 4) Plastic thread connecting fitting. 5) Optimum accuracy and performance at all times, in any position; 6) Revolutionary grooved piston for improved, durability and performance; 7) Durable tamperproof construction; 8) Volumetric meter, on principle of piston rotation, accurate measurement, easy and long term clear reading, etc. 9) Measuring accuracy is up to ISO4064 Class C.