1) Housing material : plastic 2) Suitable for measuring the total quantity of cold potable water forresidential usage 3) With combined pointer and digit wheel counting device 4) Advanced structure 5) Stylish design, accurate measurement, long usage life Specifications: 1) Ambient condition: a) Water temperature: d40oC b) Water pressure: d1MPa 2) Standard: ISO 4064 3) Error indicating: a) Low zone: ± 5% from minimum flow rate to transitional flowrate b) High zone: ± 2% from transitional flow rate to overload flowrate