Your smartphone can not only serve you as a digital ruler, but it can also help you measure various other things. Smartphones are very powerful tools, especially if you pair them up with good apps.

The cosmic distance ladder is the world’s longest ruler, built to measure the universe. Since the time of the ancient Greeks, scientists have been constructing a cosmic measuring tape to measure ...

Learn how to create a simple, effective measuring tool at home. This DIY project is perfect for those who want an easy way to measure length with precision! Louisiana: controversial Denka plant ...

Here, find out how to measure your PD using a mirror and a ruler. Share on Pinterest Some eyewear manufacturers also provide how-to videos to help customers calculate their PD without visiting an ...

If you’re younger than 20 and it’s been more than a year since you saw the eye-doctor, you may want to get a check-up to make sure you have an up-to-date measurement. With a ruler and a mirror ...

Changing the ruler’s 0 origin means changing the position where the starting point (0) for measurement on the ruler is. The default zero position of the ruler is usually at the left edge of the ...

For 2026, the design of the Subaru Outback’s rear lighting signature incorporates a ruler. It’s more than two feet long and admittedly slightly less convenient than an actual tape measure ...

A Golomb ruler is very different from your run-of-the-mill tape measure. These strange rulers are defined in terms of constraints, and are “optimized” when they are the shortest they can be.

The tiniest “ruler” ever is so precise that it can measure the width of a single atom within a protein. “We wanted to go from a microscope that maps positions of macromolecules relative to ...