Precision scribing machine

Claim 1

A SCRIBING MACHINE COMPRISING A BASE, A PLURALITY OF JACK SCREWS MOUNTED IN SAID BASE, A HORIZONTAL GUIDE RAIL MOUNTED ON SAID JACK SCREWS FOR ADJUSTMENT TO PRECISE HORIZONTAL POSITION, A SUPPORT FIXED RIGIDLY TO SAID BASE, A TABLE ROTATABLY MOUNTED IN SUBSTANTIALLY VERTICAL POSITION ON SAID SUPPORT, A FURTHER HORIZONTAL GUIDE FIXED ON SAID SUPPORT IN SPACED PARALLEL RELATION TO SAID GUIDE RAIL, A HEADER MOUNTED TO SLIDE HORIZONTALLY ON SAID FURTHER GUIDE, A FIRST CARRIAGE MOUNTED TO SLIDE HORIZONTALLY ON SAID GUIDE RAIL, A PLURALITY OF PARALLEL SUBSTANTIALLY VERTICAL GUIDE BARS MOUNTED AT FIRST END THEREOF ON SAID CARRIAGE AND AT SECOND ENDS THEREOF ON SAID HEADER FOR HORIZONTAL MOVEMENT THERWITH IN PARALLELISM WITH SAID TABLE, AT LEAST ONE OF SAID GUIDE BARS BEING MOUNTED ADJUSTABLY IN SAID HEADER AND SAID FIRST CARRIAGE FOR ADJUSTMENT PARALLEL TO SAID TABLE FOR CORRECTION OF DEVIATION FROM TRUE PARALLELISM OF SAID ONE GUIDE BAR RELATIVE TO THE OTHER GUIDE BAR, MEANS ADJUSTABLY MOUNTING SAID GUIDE BARS FOR ADJUSTING MOVEMENT RELATIVE TO SAID TABLE TO CORRECT DEVIATION OF EACH OF SAID GUIDE BARS FROM TRUE PARALLELISM WITH SAID TABLE, MEANS FOR ADJUSTING THE ANGULAR RELATIONSHIP BETWEEN THE GUIDE BARS AND THE HORIZONTAL GUIDE RAIL TO BRING THE GUIDE BARS INTO PRECISE PERPENDICULAR RELATION TO THE GUIDE RAIL, A SECOND CARRIAGE MOUNTED TO SLIDE PERPENDICULARLY TO SAID GUIDE RAIL ON THE GUIDE BARS, AND A SCRIBING TOOL SECURED TO SAID SECOND CARRAIGE IN POSITION TO PLAY OVER THE TABLE.