Tribological exams were performed utilizing a ball-on-disc T-11 tester. The balls had been fabricated from metal, whereas the discs were product of steel, aluminium oxide, zirconium oxide, polyamide and poly(methyl methacrylate). The description with the gadget along with the techniques is presented from the literature (Szczerek and Tuszyński in TriboTest https://gautamau615tbh7.madmouseblog.com/profile