Making sense of .125 on a ruler for your projects

Finding .125 on a ruler can feel like a game of "Where's Waldo" if you aren't used to looking at those tiny little lines between the whole numbers. We've all been there—you're trying to measure something for a DIY project, or maybe you're helping a kid with homework, and you see a decimal that just doesn't seem to exist on your physical tool. The good news is that .125 isn't some secret code; it's just a math-heavy way of saying something much simpler that you probably already know. ...

February 18, 2026 · 7 min · Rhianna Whitelaw