IIW (V1) Calibration BlockUsed for calibration of shear and longitudinal transducers, and verification of shear wedge exit point and refracted angle. Can also be used for resolution and sensitivity checking. Includes a 4.0” radius on one end and a 1.0” radius by .060” deep. Also includes a .060” diameter and a 2.0” diameter hole. In accordance with International Institute of Welding and ASTM E164 specifications. Dimensions: 12.0” x 4.0” x 1.0”. Metric version available