#FREE PRINTABLE CM RULER HOW TO#
#FREE PRINTABLE CM RULER FREE#

So later, we developed an online ruler by ourselves. If i just want to know what the approximate length is, that's fine,īut what i need is a more precise length so that i can apply it to my daily work. I found a problem that these existing online rules are not very accurate. Unfortunately, after i tried the virtual online rulers on the Internet, So i connected to the internet and tried to find an online virtual ruler to measure my product. Just like usual, i didn't carry a ruler with me, Just had a project on hand, and i had to tell the customer the actual size of a product. One day, i took my laptop computer to work in the coffee shop, Please visit this translation page(click). If you are willing to offer a better description in your native language, Make it more natural and easier for everyone to use, On the most popular browsers you can press the F5 key or click on the refresh button.Īnd we want to provide a better native language environment, Remember to save the setting for the next time you use it,Īfter save the setting, refresh your brower to check the result.

#FREE PRINTABLE CM RULER FREE#

No installation required, free to use, and works on your phone screen as well.ĭragging ruler adjuster left or right to fit the size of your reference object,

#FREE PRINTABLE CM RULER HOW TO#

How to use your computer screen as a ruler?Īll you need is a web browser and a credit card to compare physical sizes, Save the pixels per inch (PPI) according your own device, then you can use this ruler next time. Select a comparison item to start calibrating the ruler, My mobile phones (Sony Xperia C5, OPPO R11 Plus) are both 122.6 PPI,Īpple iPhone 5 is 163 PPI, iPhone 7 is 162 PPI, iPhone X is 151.7 PPI. Now i have the most accurate virtual ruler on the web. So i adjust the default pixels per inch(PPI) to 100.7, I found the markings are not very accurate at 30cm, In the office, a A4 size printable paper is a good comparison object,īelow ruler adjuster help us to calibrate accuracy more easily.Īfter i measure the size of virtual ruler by an actual ruler,

You can compare to any standard size object at your side,Į.g., coin, credit card, CD, paper money, mobile phone, When you know the width, you can adjust the ruler's PPI setting by it, Then search 'the width of your paper money' online, Use standard objects to compare lengths, check your wallet, use any paper money to be our compare object,.

I am lucky and found my screen has 100 PPI. Search 'display by pixel density' online, check if there has your device's brand and model,.The screen resolution of your current device is pixels. You can always choose to print the mm rulers on plastic film in order to get a transparent surface.To have the most accurate ruler online, just set the pixels per inch(PPI),īelow are some ways to know the pixels per inch to your device. This way your measuring tool will be sturdier and will not break that easy. To be able to draw straight lines it is advisable to either print the templates on a thicker piece of paper or just glue it on a piece of cardboard. So you can get a small one that can fit in your pocket or a big one for your schoolbag. The length also varies, 15 cm, ~ 18 cm, 20 cm and 30 cm. Some are yellow, blue or gray, others have a wooden and steel textures and some have a light color surrounded by a thick border. The printable ruler templates we have in this section come in different colors, patterns and markings. You can also check out the metric system conversion table from mm > cm > dm > m. If you just started learning to measure objects you can read more about “ How to read a ruler” in order to have a better idea how it works. When solving mostly math or physics problems, you will have to use at least a centimeter ruler. Most used printable rulers have at least on one side cm markings, even whether you are using one that’s made out of wood or steel. You may already know by now that a centimeter is made out of 10 mm.

Free printable cm ruler