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While we will be providing pictures you can use to follow our instructions, we recommend getting out your own ruler or measuring tape so you can follow along in real time. Example: Say you decide to measure the length of a corn on the cob. You find that your ruler comes to the second line after the 6-inch mark. This would mean that the corn is 6 1/8 inches long. Example: If you were to measure the length of a sheet of computer paper, the piece of paper would come up to the 11-inch mark on your ruler, indicating that it's exactly 11 inches long. The truth is that there are tons of moments in life when you’ll need to know how to read a ruler. And if you don’t know how to read a ruler, then you’ll likely suffer some consequences. For instance, what if you make two pieces of something that don’t fit together because one is shorter or longer than it was supposed to be? Or what if you mess up a science experiment because you didn’t accurately read the measurement of a piece of string you cut? Metric rulers usually have only centimeters and millimeters on them. But did you know there's an even tinier unit called nanometers? Learn how to convert nanometers to metersand other measurements with our in-depth guide.
Inches correspond to the imperial system, which is the main measuring system used in the US and a smattering of other countries. It’s pretty obvious that knowing how to read a ruler is important to not just your grades in school but also your day-to-day life.All of these resources, in addition to the handful of practice questions we gave you above, should be enough to get you reading a ruler in no time at all! In this guide, we’ll explain why you should know how to read a ruler and give you step-by-step instructions on how to read a ruler in inches and cm. We’ll also provide you with some helpful resources you can use to keep honing your ruler-reading skills.
Example: Say you’re measuring a piece of cloth and the ruler ends at the fourth line after the 10-inch mark. This would mean that the cloth is 10 1/4 (10.25) inches long. The Eye Level Reading Ruler is a coloured overlay filter and text highlighter about the size of an eight-inch ruler. It is discreet and professional-looking and can be kept in a book as a bookmark for easy storage. This Dyslexia Friendly resource helps relieve the symptoms of Visual Stress. Example: You’re measuring the length of a strand of hair. The strand comes to the ninth line after 16 cm on the ruler. This would mean the strand is 16.9 cm long (that’s 16 cm + 9 mm). If you want any extra assistance with learning how to read a ruler in cm or inches, videos and worksheets can be excellent resources. Part of the Visual Stress Collection: a previous winning product of the Education Resources Awards SEN Resource of the Year.
Why You Should Know How to Read a Ruler
There will always be 10 lines from one centimeter to the next centimeter. In total, there are three different lengths of lines on a metric ruler. Also, be aware that 30 cm does not directly equal 12 inches, even though they are often put on the same ruler! Launched in 2004 to provide a user-friendly alternative for Irlen Syndrome sufferers who resist using the more intrusive large overlays, these reading rulers combine the following features: - Next is 1/8 inch, which is the second-smallest unit of a ruler. The 1/8 lines are found midway between each 1/4-inch line:
There are two types of rulers you can use: the inch, or imperial, ruler and the centimeter, or metric, ruler. Finally, the smallest unit on a ruler is 1/16 inch.These tiny lines that represent 1/16 inch come between all 1/8-inch lines: Example: Say you're measuring the width of your smartphone, and it comes up to the fifth line after 4 cm on your ruler. This would mean that the phone is 4.5 cm (45 mm) wide. Got questions about decimals and fractions?Our expert guides will teach you how to convert decimals to fractions and how to add and subtract fractions.
Let’s start by looking at how to read a ruler in inches. If you’re American, this is the measurement you probably know better than centimeters, which are sometimes included on your standard 12-inch, or 1-foot, ruler (we’ll go over how to read a ruler in cm in the next section). Example: If you were to measure the width (instead of length) of a piece of computer paper, the piece should come up exactly to the 1/2 inch line between 8 and 9 inches, indicating that the width is 8 1/2 (8.5) inches. Each inch is divided into 16 lines, meaning that the space between each line is 1/16 inch long —this is the smallest length you can measure with a ruler. (Note that some rulers only go down to 1/8 inch lines, whereas others go down to 1/32 inch lines.) A sufficiently wide range of colors to meet the needs of all children who will benefit from using a colored overlay product 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).
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