These NDT UT Phased Array Calibration Block Type A (Metric) is used for angle beam verification, probe angle exit point, calibration for wedge delay, sensitivity, DAC/TCG for thicknesses up to 50mm, and crack sizing. • Metric version • Fitted storage case included. • In accordance with ASME Code Cases 2541.2557 and 2558. • Material: 1018 Steel • With maker certification Description: • (19) Thru-holes @ 1.0 mm diameter • (1) Thru-hole @ 2.0 mm diameter • (4) Flat-bottom holes @ 2.0 mm diameter x 2.0/4.0/6.0/8.0 mm deep • (4) Flat-bottom holes @ 4.0 mm diameter x 1.0/3.0/5.0/7.0 mm deep • (3) Flat-bottom holes @ 2.0 mm diameter x 3.0 mm deep machined into the 25mm radius • (4) EDM Notches @ 0.1/0.2/0.3/0.4 mm deep x 0.5 mm wide x 25.0 mm long • Dimensions: 25.0 mm x 150.0 mm x 300.0 mm • Fitted storage case.