EASY TO Read 2- 1/2" Pressure Gauge , Brass Connection - Lower MountRed Pointer with Brass NobDual Scale: psi / bar with kPa guidanceBurdon tube type, Brass and Copper Alloy Wetted Parts3/4” female hose thread adapter quickly attaches to outside faucet or hoseCARBO Instruments 2- 1/2" water pressure gauge provide accurate measurements to an effective irrigation system design, this gauge accurately measures water pressure and has brass nob with red pointer to monitor pressure fluctuation in the system. Black Plastic Case no corrosion in outside environment and internal brass and copper alloy parts for superior quality