Water Pressure Gauge and Water Flow Rate Meter,Test,2-1/2 In.,0 to 160 psi, 0 to 13 gpm,Connection Size 3/4 In. Female Hose Thread,Connection Location Inline,Smallest Graduation 5 psi/0.5 gpm,Graduations 5 psi/0.5 gpm,Accuracy +/-3 Percent,Case Material Steel,Case Color Black,Socket Material Brass,Tube Material Copper Alloy,Lens Material Plastic,Ring Material Black Steel,Operating Temp. Range -40 Degrees to 150 Degrees F,Characteristics Analog Flow,For Use With Hose Bib