The document provides instructions for using and maintaining a Taber Abrasion Tester. The tester measures wear on samples like metal, paint, textiles and leather through a rotary grinding process using different friction wheels under a load. It describes the test principle of placing a sample on a rotating platform underneath two rolling friction wheels to form a circular wear trace. The document then lists steps for test preparation, operation, and setting the number of tests, and highlights maintenance issues like keeping the machine clean, stable, and well-ventilated.