Welcome to the best printables website online, Tim’s Printables, where you’ll find a ton of free stuff for work and school. If you need to take some precise measurements, download today’s printable, the free MM ruler (millimeter ruler). This useful little download is perfect for the creative craftsman who’s always misplacing things. Now you have an unlimited supply of rulers available at the click of a button. Furthermore, this free MM ruler has a feature that a regular metal ruler doesn’t: it can bend, so you can use it to measure wavy or curved surfaces. Feel free to download the color version or the black and white version (or both). Each printable mm ruler has been exported as PDF for easy printing. Finally, before you print, remember to uncheck the “Scale to Fit” box in your printer settings, so that the ruler will be the correct size.
Printable MM Ruler
About the Metric System
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.