The file 'All-In-One Tester For 3D Printers By Techtutor 3D Printer Model' is (stl) file type, size is 625.4KB.
PL: Tester jest wykorzystywany w kursie Modelowania 3D w Fusion 360 i pod druk 3D: LINK
--Update: use version 2--
Just print and test your printer.
Units: milimeters, degrees