... 5GPM 4.easy install 5.design&utility patent certificate portable acrylic flow metermaterial1.flow meter,which is made of acrylic2.meter ... is optionalFeatures1.easy mounting ,low weight,long life span2.machined acrylic meter body,highly polished to a clear finish,good pellucidity ... 3.employing acrylic body enabled to design compact,simpl and clean4.high ...