You should be able to get an accurate ruler on screen after using this set-up process. This adjusts for any setting differences (screen resolution, browser settings, etc.) that may prevented the ruler from displaying correctly. Put the item directly on your screen (don't cover the picture entirely), and move the slider bar until it matches exactly the size of the item you chose. Pick one that you have available to actually compare to your screen. 5/8 inch: This measurement is eight times larger than 1/8 inch and equals 0.625 inch. 1/2 inch: This is the most commonly used measurement on a ruler and is equivalent to 0.5 inch. You will see several options of common items you may have with you (CD, credit card, etc.). 3/8 inch: This measurement is three times the size of 1/8 inch and equals 0.375 inch. Click on the 'Not sure what your monitor size is?' link.Ģ. If you don't know your screen size, or think it's still displaying inaccurately:ġ. This is an easy fix if the website didn't accurately determine your screen size, and you know what your screen dimensions actually are.

If you click on it, you can change the dimensions. 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.For those who think the ruler size is 'off' on their screen, use the following steps:Īt the top of the page, there's a link that gives your monitor size. 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.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.Here is a flange size chart that is in the middle of that and adds 2-3 mm to give you a starting point of what breast shield you should use. However, there is debate on this in the lactation community. There are millimeter (mm) and centimeter (cm) divisions on one side of it while the other side has divisions in. If you don’t possess a real ruler but need to make measurements, you can use a standard full-size printable ruler that can measure up to 12 inches (1 foot) or 30 centimeters. 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. While I used to recommend adding 3-4mm to your measurement, I actually now recommend just 0-2mm. Printable 12-inch Ruler for Actual Size Measurements.The screen resolution of your current device is 1366x768 pixels. 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.

Ruler life size ruler