Ultrasonic Testing (UT) introduces beams of high frequency sound into the piece. The sound reflected at material interfaces is analyzed to define the presence and location of discontinuities. Angle beam ultrasonic flaw detection is used to inspect welds using shear wave mode of transmission to detect welding discontinuities such as linear defects and volumetric defects. High penetrating power which allow the detection of flaws deep in the part. High sensitivity permitting the detection of extremely small flaws. Only one surface need be accessible. Greater accuracy than other non- destructive methods in determining the depth of internal flaws and the thickness of parts with parallel surfaces. Some device capable of estimating the size, orientation, shape and nature of defects.