The Vibration-Resistant Pressure Gauge, Pressure-Pro ATG001, is a tool that can be easily incorporated into your system for monitoring water flow. It is compatible with most gas-powered pressure washers, as long as they do not exceed a maximum pressure of 4200 PSI or a maximum flow of 8 GPM. The gauge has a 3/8″ quick connect inlet and outlet ports that are convenient to use. The gauge is designed to reduce vibrations by filling the case with water, ensuring accurate readings. The gauge also includes clear markings for both PSI and BAR measurements, and it uses the Fahrenheit temperature scale. This pressure gauge is suitable for gas-powered pumps and measures 3″.