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 ...

Buying appliances isn't just about size tags. Small missteps in measuring can cause big headaches and it's easy to miss ...

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 ...

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 learned during her 22 ...