"GAGE,CONCENTRICITY;USED TO ASSURE THE ROTOR POSITION RELATIVE TO THE STATOR,CIRCULAR RUNOUT LIMIT IS .003 IN. AND CONCENTRICITY LIMIT IS .006 IN.,RELATIVE TO 3.1836 - 3.1845 IN. DIAM. BORE IN THE GEARBOX;CONSISTS OF A COMMERCIALLY AVAILABLE NON-MAGNETIC DIAL INDICATOR,A MOUNTING BASE DEVELOPED SPECIFICALLY FOR THIS APPL., STANDARD AND MODIFIED COMMERCIALLY AVAILABLE MOUNTING RODS, AND A CLAMP"