Cressi Pressure Gauge ModulePressure Gauge Module The Mini Manometer Pressure Gauge (imperial) dial reads from 0 to 5000 psi. For at a glance monitoring of air pressure the instruments face is divided into three different colored zones: the area from 600 psi and below is highlighted in red with a solid bar and red stripes. If Gauge is used on deeper dives, the red scale extends and fades to 1,300 psi, this provides for added reserve air indication required at greater depths.