Ruler for A5 Binders and journals

A short ruler with snap-through holes that fit A5 binder sizes. Can be added to your existing A5 notebook as a straightedge or ruler for drafting, drawing, etc. 1.5mm think and 210mm long. works well as a page mark too!

Here's the binder I used it with:
https://amzn.to/4hWtA5G

Here's the paper I use with it (I like graph/dot paper):
https://amzn.to/3ANyql8