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. With options to switch between centimeters and inches, add custom lines, calibrate with standard sizes, and save user sessions, it's an indispensable resource for a wide range of applications.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. In summary, our Online Ruler is a powerful, easy-to-use, and accurate measurement tool for your website. This means that when users return to the website, they'll find the ruler exactly as they left it, eliminating the need for constant readjustments. By leveraging local storage, the tool automatically saves the user's preferences, custom lines, and calibration settings. One of the most valuable aspects of our Online Ruler is its ability to store user sessions. This feature is particularly useful for comparing measurements or marking multiple dimensions simultaneously, making the Online Ruler even more versatile and convenient. These lines can be reset at any time, allowing users to clean the ruler for future use. Other Features:Ĭustom lines can be added to the ruler by clicking on a specific measurement. By dragging the ruler left or right, users can easily calibrate the tool, ensuring accurate measurements across different devices. To improve the ruler's precision, our tool offers calibration using predefined standard sizes, such as a credit card or A4 paper. The ruler adapts to your device's screen size, ensuring accurate measurements. In inches mode, our tool marks every 1/16 inch, labeling important fractions like 1/4, 1/2, and 3/4 inches. ![]() When in centimeters mode, the Online Ruler creates markings at every millimeter and labels them accordingly. Using these values, another function creates ruler markings in centimeters or inches based on the chosen unit. We retrieve the pixels per inch (PPI) value from the user's device, while another function calculates the screen size in inches. Our Online Ruler uses JavaScript to ensure precise calculations. ![]() With its ability to switch between centimeters and inches, add custom lines, calibrate using standard sizes, and save sessions for later, it's an invaluable asset for accurate measurements. ![]() Introducing our Online Ruler, a versatile and user-friendly tool for graphic designers, architects, engineers or everyone who needs a ruler.
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