"GAGE,OUTSIDE DIAMETER - NO. 4 BEARING REAR AIRSEALING RING; USED TO INSURE FINISHED DIAMETER IS WITHIN 12.182 AND 12.185 IN; CONSISTS OF A DIAL INDICATOR, PARALLEL TYPE BAR, POSITIONING POSTS, FIXED CONTACT LEG, ADJUSTABLE CONTACT LEG; INDICATOR INCREMENT: 0.0001; SHIPPING CONTAINER"