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, If you are interested to help this, please visit this translation page. We are looking for volunteer to improve the content in your native language, We hope to provide a more user-friendly experience,Īre you willing to offer a native language version for your country ? On the most popular browsers you can press the F5 key or click on the refresh button. Remember to save the setting for the next time you use it,Īfter save the setting, refresh your brower to check the result. Save the pixels per inch (PPI) according your own device, then you can use this ruler next time.ĭragging ruler adjuster left or right to fit the size of your reference object, 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. Of course, lengths are customized for each job.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. A wide range of depths are available, far too many to list here, so please contact your local manufacturer for more information on their offerings - in general depths start at 6" and go up to 30" and beyond. Standard widths are specified in the above publication, but can be customized as needed. The following table comes from the American Institute of Timber Construction's Standard Specification for Structural Glued Laminated Timber of Hardwood Species publication.ĪNSI/AITC A190.1-1992 allows for any width and depth of glue laminated timber. It is advisable to check with your contractor or lumber supplier before finalizing design details so you aren't surprised by what you receive. However, in some cases, like the big-box hardware stores, the boards come in dimensional widths similar to softwood widths. In most cases, hardwood boards come in random widths to be ripped to size by the woodworker. For instance, hardwood trim that ends up being just over 1" thick (surfaced on 2 sides) is called a five-quarter (5/4) board. In North America, hardwood lumber is usually specified using the quarter system, where a board is identified by its thickness in quarters of an inch. Surfaced refers to a finishing process that smooths the lumber to remove all saw marks. Hardwood lumber is sized based on how many sides are surfaced. Softwood lumber comes in a number of standard lengths as listed in the table below. North American Standard 8-by Lumber NOMINAL SIZE (INCHES) North American Standard 6-by Lumber NOMINAL SIZE (INCHES) North American Standard 4-by Lumber NOMINAL SIZE (INCHES) North American Standard 2-by Lumber NOMINAL SIZE (INCHES) North American Standard 1-by Lumber NOMINAL SIZE (INCHES) In the United States, softwood lumber is governed by the National Institute of Standards American Softwood Lumber Standard (PS 20). Softwood lumber is generally used for framing walls and floors.
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