It is used to determine the degree of preservation of the appearance of the carpet produced by tapping or tufting method. The test sample is placed inside the rotating drum of the device in such a way that the pile is inside and free-acting tetrapod foot is placed on. At the end of a certain number of rotations, the change in appearance that occurs on the surface is detected.

H 003-1 : Single drum test device
H 003-3 : Three-drum test device

ISO 6131, ASTM D 5251