# Printable Ruler with Centimeters

You’re arrived at Tim’s Printables, a website devoted to providing you with free printable PDF worksheets for you and your kids. A new addition has made it into our growing library of printable tools: a free printable ruler with centimeters, for people who prefer to use metric system. If you need to do some measuring at work or school but don’t have a ruler on hand, this paper ruler will help you out. One of the neat things about making a ruler out of paper is the ability to measure curved surface. Let’s say for instance that you want to measure your bicep. That would be tricky to do with a metal ruler. But using this paper centimeter ruler, no problem! Our printable ruler with centimeters is available in two formats: black and white and color. Pick the one you prefer. Both printables have been saved in PDF format. When printing, be sure to unselect “Scale to Fit.” Otherwise you may print a slightly larger version of the ruler.

Here’s some useful facts about the Metric System:

1. The Metric System was introduced by France in 1799.
2. The metric system is also known as the “International System of Units,” of “SI”
3. The fundamental unit of length in the International System of Units is the Meter. (Metre)
4. Since 1983 the meter has been defined as “The length of the path traveled by light in vacuum during a time interval of 1/299,792,458 of a second.)
5. One centimeter = 0.393701 inch (in.)
6. One inch = 2.54 centimeters (cm)
7. The Metric System is used by all nations of the world except Burma, Liberia and the United States.
8. In the United States the metric system is widely used in the areas of science, military, and industry.
9. A centimeter = 1/100th of a meter
10. The circumference of the Earth at the equator is about 40,075 kilometers.

Source: Wikipedia