Compression tester

Claim 1

A COMPRESSION TESTER FOR AN INTERNAL COMBUSTION ENGINE HAVING A CYLINDER WITH A SPARK PLUG OPENING COMPRISING; AN ADAPTER MEMBER HAVING A CONTINUOUS PASSAGE FROM ONE END THEREOF TO THE OTHER; ONE OF THE TWO ENDS OF SAID ADAPTER BEING ARRANGED TO BE REMOVABLY SECURED IN THE SPARK PLUG OPENING; A PRESSURE GAUGE ASSEMBLY COMPRISING A PRESSURE GAUGE, A CHECK VALVE INCLUDING A HOUSING CONNECTED AT ONE END THEREOF TO SAID PRESSURE GAUGE, A PAIR OF ANGULARLY RELATED RIGID EXTENSIONS CONNECTED DIRECTLY TO SAID HOUSING AT THE OTHER END THEREOF; EACH OF SAID EXTENSIONS HAVING THROUGH PASSAGES; SAID HOUSING HAVING PASSAGES INTERCONNECTING ONE END OF SAID THROUGH PASSAGES AND SAID CHECK VALVE; SAID CHECK VALVE ARRANGED TO NORMALLY BLOCK FLUID FLOW FROM SAID ONE END OF SAID HOUSING TO SAID OTHER END THEREOF; A VALVE IN EACH OF SAID THROUGH PASSAGES OF SAID EXTENSIONS; EACH OF SAID VALVES COMPRISING CHECK VALVES CONSTRUCTED AND POSITIONED TO BLOCK FLUID FLOW FROM THE OTHER END OF ONE OF SAID THROUGH PASSAGES THROUGH SAID PASSAGES AND OUT THE OTHER END OF THE OTHER OF SAID THROUGH PASSAGES; MEANS REMOVABLY; SECURING ONE OF SAID EXTENSIONS TO THE SECOND OF THE TWO ENDS OF SAID ADAPTER MEMBER; SAID FIRST-MENTIONED CHECK VALVE RETAINING MAXIMUM PRESSURE REACHED IN SAID CHECK VALVE HOUSING AND PRESSURE GAUGE AND PERMITTING THE PRESSURE GAUGE TO RETAIN ITS PRESSURE READING WHEN THE PRESSURE GAUGE IS REMOVED FROM THE ADAPTER MEMBER, SAID EXTENSIONS HAVING THEIR RESPECTIVE AXES ORIENTED AT DIFFERENT ANGULAR POSITIONS WITH RESPECT TO THE AXIS OF SAID HOUSING TO SELECTIVELY POSITION SAID PRESSURE GAUGE ASSEMBLY WITH RESPECT TO SAID ADAPTER MEMBER.