I didn't really need this, but at the same time I did, and so do you.
Right side is stepped every 1/4 inch
Left side is stepped every 1/8 inch, but marked every 1/4 inch (and the markings are opposite the markings on the Right side so you get the full stack)
No supports needed
Print flat
Print .2mm layer height and change the filament at about layer 117 to get different color markings with only 1 filament change