Rollscan 350 saves on material and labor expenses Rollscan 350 is a digital Barkhausen noise analyzer. It is designed for surface quality control and testing of near-surface defects such as grinding burns, heat treatment defects, as well as changes in stress and microstructure in a wide variety of ferritic steel and other ferromagnetic materials. Inspection with Rollscan is fast and can easily match the production rates of most manufacturing lines, enabling process control in real-time. As a result, significant quality improvements and savings on material and labor expenses have been realized by companies using the Rollscan system. A large selection of sensor types makes Rollscan systems flexible. Piston pins, gears, bearing rings and rollers, camshafts and crankshafts, and landing gears are just some of the parts that can be successfully tested with Rollscan 350.