Differential Pressure
GM Portable Gage Kit
The Preso portable gage Model GM is a portable read-out meter designed to measure differential pressure.
The gage comes complete with a hard side case, two hoses, charts and instructions with factory assembled Hi & Lo purge valves, flexible purge tube and internal manifold balance valve to prevent over-pressurization, within a leak proof factory assembled round face plate with the scale read-out units clearly visible. Read-out meters with scale multiplying or dampening equipment will not be accepted.