Is This a Standard Ruler?

I've been working on a product. And I thought I'd show it to you. It's in the early prototype stage. You can give me some feedback. Okay. So here I've got a standard ruler. Yes. 30 centimeters. But they're all marked and there's notches everywhere. Wouldn't it be nice if you have a minimalist ruler experience? Right. Here's the replacement to your 30 centimeter ruler. And you just saw me run around and make these. After the sparkling wine tasting, it's a single 18 centimeters ruler. And a single 12 centimeter rulers. The only thing that's on there is 17. Isn't that great? A single notch