Random Tumble Pilling Tester.To determine the pilling and fuzzing characteristics of textile fabrics. Stainless steel impellers rotate within individually lit aluminium chambers constantly tumbiling test fabrics against cork liners for a predetermined time controlled by a timer and audible alarm. Compressed air is also injected into the chamber to assist in the tumbling action. With 2 or 4 test chambers. Laboratory standard compressed air supply required.