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 ...

This option is useful for those who may travel to another country and need to measure something such as clothing in a department store. For more help getting the most out of your Apple devices, check ...

In business, measurement is half-way to performance improvement. Assessing supplier performance is a difficult task. This article overviews price, cost and quality supplier performance measurement ...