Dial size : 2" Connection:1/4" NPT Male Botton Center Mount Pressure range: 0-60psi/4 bar dual scale; Accuracy: Made to ASME B40.100 standard 3-2-3%; Steel gauge case, Configurable protection case, brass wetted parts. Bourdon tube and Copper movement Working temperature : -4 to 140 deg F/-20 to 60 deg C Ambient temperature : 140 deg F/60 deg C maximum Application: measuring water pressure of the filter for swimming pool, spa, aquarium etc. Stainless Steel Oil filled Pool Filter Pressure Gauge range to 50psi/350KPA for water pressure instrument replacement field; Dial size: 2",Liquid filled Gauge Pressure range: 0-50psi/350KPA dual scale; Bottom Connection: 1/4"Male NPT lower mount; Connection adaptor: Convert male 1/4"NPT to male 1/8"NPT adaptor Accuracy: Made to ASME B40.100 standard ±2%; Stainless steel case, brass wetted parts, glycerin filled; Two color zone on the dail, Blue for filter, Red for clean. Working temperature : -4 to 140 deg F/-20 to 60 deg C Ambient temperature : 140 deg F/60 deg C maximum Oil filled Gauge improved the durability in applications where vibration is present. Widely used for water pressure measuring in the irrigation system, house and pool water system etc.