For rulers that don't have a hole for hanging, it's a quick and easy job to drill a hole and I've also hung binder clips from a nail or a hook and pinched the ruler in the clip. Just use a bigger clip for heavier rulers. I also have an old letter holder and it works great for the small stuff. It would probably be fine for heavier rulers if I screwed down on a heavier base. Great thread. I'm always looking for easier storage in my small space.