FIXTURE USED TO HOLD THE 4TH STAGE TURBINE BLADE FOR MEASUREMENT OF THE BLADE TO DETERMINE BLADE STRETCH; CONSISTS OF A STEEL ASSEMBLY W/ CLAMP; INCLUDES FLUSH PIN AND GAGE; DIM: 4.0IN W X 10.0IN L X 4.8IN H; REPLACES FIXTURE PWA52717 VIA A REVISED BLADE ATTACHMENT