Esteps calibration block
thingiverse
This has some shapes that should give you visual confirmation on your esteps correctness. Instructions Print, tweak, print, tweak, etc, the usual :D
Download Model from thingiverse
With this file you will be able to print Esteps calibration block with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Esteps calibration block.