Adhesion meter

While working on the thesis work, it was necessary to measure the adhesion of the manufactured coating to the steel substrate (ГОСТ 31149-2014 (ISO 2409:2013)), since I did not have a special tool, it was rather expensive, it was decided to print the adhesiometer on a 3D printer. Blade 0.4 mm wide, spacers 0.6 mm, respectively 1mm step. Spacers processed sandpaper, because the printer can not print exactly 0.6mm