Four brushes that help check your body proportions. The numbers loop back from 10 to 1, so you can still easily count a figure with a tiny 1:13 head ratio if you want!
The line tool is simplest to use. Just adjust brush size and then click and drag.

The ribbon version can be wonky, but it's helpful if your character is not standing straight, like sitting or bending over.

I also included versions without numbers if you want just the grid.
The pose used in the examples is my own, plan on uploading that next.
Category 1
Update history
12/23/2022: increased price