Uses regular shop air (40 -150 psig).
Internal pressure regulator keeps measuring pressures within calibrated range.
Adjust meter to zero using a single setting master and the zero setting screw.
High visibility meter has fine line graduations and a needlethin hand for clear, precise readings. An air filter is included to remove dust and dirt contaminants from air line.
Tooling mounts to the front of the unit. Connections are tight with finger pressure.