How do You Read a Metric Ruler?

A metric ruler is read in exactly the same way as a US standard ruler except the increments are in millimeters, centimeters, decimeters and meters. The metric system is a decimal based system the development of which was began in 1790. In 1960, it was adopted as the standard measurement system by nearly all countries in the world except the United States. It is the only standard of measurement for scientific endeavors. For more information look here: