"GAGE FRT TURB CASE;CONSISTS OF DIAL IND., PARALLEL TYPE BAR,POSITIONING POSTS, & ADJ./LOCK. DETAIL HAVING SLIDING CONTACT LEG,DIAL IND., SIZED & TINTED FOR ENHANCED VIS., PAR. BAR IS ALUM. TO RED. TOOL WEIGHT, BAR SPANS MEAS. AREA & HAS 2 SPHER. ENDED LEGS AT OUTWARD ENDS RESTING ON FR FLANGE FACE TO POS. ADJ. GAGING DETAILS AT ONE END OF BAR;DIAL IND. READS PLUS AND MINUS;MEAS. READ MUST BE 25.868 +/- 0.003 FOR ACCEPT.,SERD 7823"