In this case, refer to the instructions above to learn how to read a ruler in inches.Īlso, be aware that 30 cm does not directly equal 12 inches, even though they are often put on the same ruler! You might see inches on the other side of your metric ruler. The standard metric ruler is 30 cm long. Each centimeter is labeled with a number to show the measurement it's referring to. This is especially important to know if you’re studying science (recall that science generally uses the metric system -not the imperial system). Knowing how to read a ruler in cm is also helpful for people who'd prefer to not work with fractions (which you must do with inches) and who'd like to work with other units instead (in this case, millimeters). A pencil case for school, college or university is not complete without a durable and reliable ruler. The most notable use of a ruler, however, is in office spaces and schools. The printing industry and other industries utilise different types of rulers as well. Different types of rulers can be used in different industries, for example, in tailoring, software, architecture, design and more. Uses of a RulerĪ ruler has had many uses throughout history but has always been a prominent tool in Geometry. Other forms of rulers include a desk ruler, a steel ruler, a carpenter's rule, a seamstress tape and even a tape measure. The first flexible ruler, however, was invented back in 1902 by Frank Hunt. The first folding ruler was created in 1851 by Anton Ullrich. For example, we have metal, wooden, rubber and folding rules to use. The wooden ruler dates back to the 16th Century however, we now have different forms of rulers. The metric system was then introduced into the UK at the start of 1965. The idea was first proposed in 1670 however, it was only standardised in the 1790s, by the French. In 1799, the metric system was introduced as the existing system was impractical for trade during the French Revolution. The metric system is the decimal measuring system based on the litre, metre and gram as units of capacity, length and weight/mass. The first ruler was actually a copper alloy rod however, there were rulers made of ivory in 1500 BC. The first ruler did not look like the ones we have in our stockroom. The first noted ruler in history, however, dates back to 2650 BC. In the past, humans have used body parts as ways to measure distances or objects, for example, a hand or foot. Some cool facts about rulers you probably didn't know ! The Invention of the First Ruler Due to the easy fold mechanism on the sides, the paper ruler can be used for measuring and drawing as well. Nowadays, the existence of physical ruler is not as much as compulsory as it is before such an innovation in the digital world.JustFreeTools provides you with an easy to use, free printable online ruler that will save you to ever look for a ruler again! For Letter as well as A4 sized paper, inches as well as centimeters. Rulers are also linked with the measurements of different objects in the real life. Many projects of engineering, art and sketching are just not possible to complete without them. You don’t have to get any subscription of this ruler and use it for free hundreds and thousand times.Īctually, rulers are more central instead of just being a tool. is the place where you can download & print a ruler several time for free and measure anything you want.ĭon’t worry if you lost your physical ruler. Wondering about where you can get the online ruler? You are at the right place. So if you don’t have a ruler, lost it or get it broken, then a ruler online is perfect thing to help you out in this situation. From inches to centimeters, online ruler allows you to measure objects in any parameter you need. It will help you measure things online without any physical ruler. What would you do now? That’s why, online ruler is a real need nowadays. Second situation be like, you are carrying your bag having a plastic ruler, sketch pencil, eraser, pointer and everything else, you put down your bag down and SNAAAAAAAP! Your ruler breaks due to external pressure.Īll your office work depends on a ruler and due to Sunday there is no stationery shop open today. Just imagine that you are working on your final university project, want to measure different objects, but Oops! You forget to buy a ruler and now you have nothing to measure things. Uncertainties have no limit, no day, no date and no time.
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