IIW-TYPE 2 CALIBRATION BLOCK INCH VERSION

An improved design of the initial IIW-Type 1 concept. includes a distance calibration cut-out with a 2.0" radius and .250" depth that is superposed on a 4.0" radius. Includes distance calibration markers to the 2.0" hole as well as the numbers 3, 5, and 8 through holes (3/64", 5/64", AND 8/64" diameter) for sensitivity testing or surface wave inspection. according to the requirement