Your phone is useful for a lot of things. You can even use it as a ruler. Here are the best ruler apps and measurement apps for Android!

How to Tell If Your Spaghetti Is Done Using Just a Ruler Keep throwing noodles against the wall if you want, but this tactic ensures the pasta's texture is just right every single time.

The pupillary distance (PD) measurement is a requirement for people who want to purchase eyeglasses. Here, find out how to measure your PD using a mirror and a ruler.

Science microscope biology Researchers use a microscopic ruler to measure one atom-wide distances between molecules Advanced techniques can be applied to looking into the infinitely small world By ...