"GAGE,INDICATOR; C/O STEEL BEAM W/ A RISER BLOCK ON ONE END WHICH LOCATES THE OUTSIDE SNAP DIAMETER OF THE OUTER FLANGE AND RESTS ON THE TOP SURFACE OF THE FORWARD O.D. SNAP DIA; RISER BLOCK AND DIAL ASSY IS ATTACTED TO THE OPP END OF THE BEAM; THE RISER BLOCK RESTS ON THE TOP SURFACE OF THE O.D. SNAP DIA AND THE INDICATOR SHOVEL CONTACT PICKS UPON THE OUTSIDE SNAP DIA OF THE OUTER FLANGE; INCLUDES STORAGE BOX"