"MASTER GAGE FRT TUR;CONSISTS OF STEEL BAR HAVING GGE CONTACT BLOCK & SUPPORT BLOCK DOWELED & BOLTED TO TOP SURF. OF EACH END,EACH CONTACT BLOCK HAS AN AISI A2 OR EQUIV, REPL. WEAR INSERT ATTD TO INNERMOST FACE;CONT. DIM. BET CONTACT BLOCKS IS 25.1600 +/- .0002 REPRESENTING FRONT TURB. CASE MID INNER SNAP DIAM.,USED TO CHECK & SET PWA715056 GAGE;CONTAINER W/FOAM INSERT PROVIDED;28.0 IN. L;3.0 IN. W;4.0 IN. H;10.0 LB;SERD 7825"