Colormunki argyllcms scanning template

[crenedecotret]

Hello just out of curiosity, would anyone have a printable "ruler" for scanning of small patches with a colormunki and argyllcms that they would be willing to share? I believe I've seen something here for A4 but I'm having problems finding it.. and I'm using letter paper.

I typically use a plastic ruler on one side to guide the device but I wanted to try something different.

thanks!