The ISO 10361 Vettermann Drum Test is a standard of the International Organization of Standardization (ISO) that determines the surface appearance retention of textile floor coverings using the hexapod tumbler. This test is one of several components used when assessing the potential performance of carpet products for use in areas with heavy foot traffic. The scope of testing involves securing a carpet specimen along the inside diameter of a rotating drum apparatus. As the drum rotates, a metal ball covered with rubber protrusions tumbles around inside of the drum to simulate traffic or wear. After a predetermined amount of rotations, the specimen is then checked and rated based the change of surface texture and color.