Pressure gauge and method of operation

Claim 1

THE COMBINATION OF A MECHANISM FOR DETECTING A LEAK IN A CHAMBERED OBJECT HAVING AN INERT GAS THEREIN, SAID MECHANISM HAVING A FIRST CONDUIT FOR RECEIVING THE INERT GAS THROUGH A LEAK IN THE OBJECT BEING TESTED, A SECOND CONDUIT, AN EVACUATION VALVE CONNECTING SAID SECOND CONDUIT TO SAID FIRST CONDUIT, A GAS DISTRIBUTION VALVE CONNECTED TO SAID SECOND CONDUIT, A DIFFUSION PUMP, A THIRD CONDUIT CONNECTING SAID DIFFUSION PUMP TO SAID GAS DISTRIBUTION VALVE, A MECHANICAL PUMP, A FOURTH CONDUIT CONNECTING SAID MECHANICAL PUMP TO SAID DIFFUSION PUMP, A GETTERING CHAMBER, A FIFTH CONDUIT FOR CONNECTING SAID GAS DISTRIBUTION VALVE TO SAID GETTERING CHAMBER, A LOW PRESSURE GAUGE CONNECTED TO SAID GETTERING CHAMBER, SAID MECHANICAL PUMP, DIFFUSION PUMP, GETTERING CHAMBER AND LOW PRESSURE GAUGE DRAWING THE INERT GAS INTO SAID LOW PRESSURE GAUGE, SAID LOW PRESSURE GAUGE INDICATING THE INCREASE IN PRESSURE PRODUCED WHEN SAID INERT GAS IS RECEIVED, SAID DISTRIBUTION VALVE SHUTTING OFF SAID THIRD CONDUIT, DIFFUSION PUMP, FOURTH CONDUIT AND MECHANICAL PUMP FROM COMMUNICATION WITH SAID CHAMBERED OBJECT TO ENABLE ALL OF THE GAS FROM SAID CHAMBERED OBJECT TO PASS TO SAID LOW PRESSURE GAUGE.