Screw thread gage for testing for pitch diameter, lead, drunkenness, straightness, roundness and taper

Claim 1

A SCREW THREAD GAGE FOR A TEST THREAD ADAPTED TO USE INDICATORS EACH WITH A CONTACTOR COMPRISING A FRAME INCLUDING A FIXED MEMBER BEING AN ARM AND A MOVABLE MEMBER MOUNTED ON THE FIXED MEMBER FOR MOVEMENT TOWARDS AND AWAY FROM THE ARM, AT LEAST ONE GAGING UNIT CARRIED BY THE FRAME, EACH GRIPPING UNIT INCLUDING A PLURALITY OF STUD MEANS CARRIED BY THE FRAME ON ONE SIDE THEREOF AND IN SPACED RELATION, ONE STUD MEANS BEING CARRIED BY ONE MEMBER AND AT LEAST ONE STUD MEANS BEING CARRIED BY THE OTHER MEMBER, A FIRST GAGING MEANS MOUNTED ON A STUD MEANS INCLUDING A PAIR OF GAGING ELEMENTS EACH HAVING A GAGING RIDGE AND THE GAGING RIDES BEING SPACED A PLURALITY OF THREAD TURNS FROM EACH OTHER, COOPERATING GAGING MEANS MOUNTED ON A STUD MEANS CARRIED BY THE OTHER MEMBER INCLUDING A SIGNAL GAGING ELEMENT HAVING A GAGING RIDGE, THE STUD MEANS MOUNTING SOLELY ONE OF THE AFORESAID GAGING ELEMENTS IN FIXED OR ESSENTIALLY FIXED AXIAL POSITION, THE STUD MEANS MOUNTING THE OTHER SAID GAGING ELEMENTS FOR AXIAL MOVEMENT, THE GAGING RIDGE OF THE SINGLE GAGING ELEMENT BEING LOCATED MIDWAY BETWEEN THE GAGING RIDGES OF THE FIRST GAGING MEANS, AND A PLURALITY OF INDICATOR MOUNTING MEANS CARRIED BY THE FRAME EACH ADAPTED TO MOUNT AN INDICATOR WITH THE CONTACTOR THEREOF TO BE CONNECTED TO INDICATE AT LEAST TWO OF THE MOVEMENTS OR POSITIONS INCLUDING THAT OF THE MOVABLE MEMBER WITH RESPECT TO THE FIXED MEMBER AND THE AXIAL MOVEMENT OF ONE OF THE AXIALLY MOVABLE GAGING ELEMENTS OF ONE GAGING MEANS AND THE AXIAL MOVEMENT OF AT LEAST ONE AXIALLY MOVABLE GAGING ELEMENT OF ANOTHER GAGING MEANS.