To meet these changing requirements, Rosen has developed its 'extended geometry' pig (XGP) that is designed to meet, and even exceed, the demanding regulatory requirements for dent detection thresholds. The new XGP pig uses touchless eddy current 'mechatronic' caliper sensors to provide a high-quality and high-resolution pipe wall geometric profile. This design is intended provide high accuracy due to the full coverage from dual sensor planes. The sensor itself represents a major development of the traditional caliper arm sensor: contact with the pipe surface is not necessary, given the touchless sensor located in each sensor head. In addition, the measured data is compensated for any dynamic behaviour of the caliper arm, resulting in any unwanted inertia being fully assimilated by the touchless measurement. The result is a robust sensor able to detect sharp transitions in the pipe wall shape, and ignoring non-conductive material such as scale or wax. The new mechatronic unit is designed to function at speeds up to 5m/s, and to provide a dent depth resolution of 2.5mm based on a 16-in tool. However, even though accurate dent detection and assessment is extremely beneficial, it is equally important to have detailed information regarding the presence of any corrosion, cracks, or stress concentrators in the dent region. High-resolution ILI technologies are available, and Rosen has combined them with the XGP in a single inspection tool that is now able to detect and accurately measure such pipe defects based on magnetic-flux leakage (MFL), circumferential MFL, or EMAT crack detection technologies. An x-y-z mapping electronics component can also be included to determine bend radii, bend length, and bend direction.