Abstract: A mounting system for maintaining a transducer 20 in contact with a pipe 12 during testing. The system is mounted to a frame 32 which is in turn mounted for movement along a length of pipe. A first step in the testing procedure is to position the frame 32 a distance away from the pipe dependent on the pipe diameter. A carriage 34 coupled to the frame is then lowered to a scanning position and scanning takes place as the frame is moved along the pipe. A universal joint mechanism 36 connecting the carriage to the transducer 20 allows up and down and side to side movement of the transducer and thereby allows scanning to continue on pipes with bows and other irregularities along their length. When the pipe end is neared the carriage 34 is retracted away from the pipe 12 by action of a spring mechanism 154. In this retracted position downward movement of the transducer is prevented by a ball support 146, 147 coupled to the transducer and contacting a supporting surface 149 of the carriage.