In cooperation with W.S. Werkstoff Service GmbH, we offer a testing concept for semi-automatic ultrasonic testing of wheelsets. The WS3 (“Wheel Set Scan System”) consists of two scan appliances for axle inspection (customised for shaft and branch diameter) as well as two appliances for semi-automatic wheel rim inspection. The WS3 uses mechanical guides to accurately place the PAUT probes on the test surface. Encoders track the probe positions and end the scan automatically. The test data is connected to the probe positions for a locally precise evaluation. This system shortens inspection times, improves reliability, documents data reliably, creates electronic reports and ensures flexible configuration of the test procedures.