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. Share on Pinterest Some eyewear ...

All Debra Monck wanted was a tool that would help her students learn the difficult subject of measuring. Conventional rulers just didn’t work, the Pohatcong Township, N.J., woman had learned during ...

Since the scale line of a general ruler has a width, many people have had the experience of trying to draw a line of the correct length with a ruler and wondering 'how far should I draw this scale ...

We've gotten less snow in the Hudson Valley in recent years, but when it does snow, every time it snows, the question swirls before the flakes stop falling: "How much did we get?" Believe it or not, ...