![]() ![]() The tiny little lines between all of the more prominent lines are 1/16 inch. my Asus laptop is 100.7 PPI, Apple MacBook Air is 127.7 PPI, Xiaomi Mi Pad 3 is 163 PPI, my mobile phones (Sony Xperia C5, OPPO R11 Plus) are both 122.6 PPI, Apple iPhone 5 is 163 PPI, iPhone 7 is 162 PPI, iPhone X is 151.7 PPI. The smaller (but still prominent) line between the 1/2 mark and the numbered inch line is 1/4 inch. against the short side of a letter size paper - 8. To improve the rulers precision, our tool offers. IMPORTANT: Make sure to print this chart to Actual Size (no scaling). The ruler adapts to your devices 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. The most accurate way, after i measure the size of virtual ruler by an actual ruler, i found the markings are not very accurate at 30cm, so i adjust the default pixels per inch(PPI) to 100.7, now i have the most accurate virtual ruler on the web. When in centimeters mode, the Online Ruler creates markings at every millimeter and labels them accordingly.Below ruler adjuster help us to calibrate accuracy more easily. Use standard objects to compare lengths, check your wallet, use any paper money to be our compare object, then search "the width of your paper money" online, when you know the width, you can adjust the ruler's PPI setting by it, you can compare to any standard size object at your side, e.g., coin, credit card, CD, paper money, mobile phone, in the office, a A4 size printable paper is a good comparison object, the longer the more accurate. RULER AIDS IN ENLARGING A transparent celluloid ruler placed in.Search "display by pixel density" online, check if there has your device's brand and model, i am lucky and found my screen has 100 PPI.Now that you know how to print an MM ruler, you can start using it to take accurate measurements. Step 3: Print out the ruler at a 100 scale. The screen resolution of your current device is 1366x768 pixels. Step 2: Open the file in your preferred program. This virtual ruler that can be adjusted to true size, that can actually measure the actual length, the upper half is metric ruler (millimetre and centimetre). To have the most accurate ruler online, just set the pixels per inch(PPI), below are some ways to know the pixels per inch to your device.
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