![]() If for some reason this information is difficult to obtain and you have a standard plastic card with you, you can use the second method. If you do not know the exact value of your screen’s diagonal, you can find it in the technical documentation attached to the device, or simply search the Internet for the model name. ![]() In this case, the initially visualized ruler will be suitable for measurements that do not require high accuracy (especially when measuring small objects). Nevertheless, the deviation may be minimal. Accordingly, to the best possible, the reliability of the indications of the uncalibrated online ruler will differ from the standard. Depending on the type and class of device, the probable error varies in a range of up to several centimeters, or 1 inch. This circumstance is caused by the existing constraint imposed by the specifics of the interaction of modern web browsers (none of which has the functionality of providing web applications with access to information about the display’s physical parameters) with operating systems. In most practical cases, this calculated value does not correspond to the real extent and is instead proposed for consideration as an approximate one for consideration purposes. The diagonal of the current device's display, automatically detected by the browser, is. This presents many of the most common options among users. You can also select the size from the drop-down list (which opens when you click the button ▾, which is adjacent to the numeric input field). Then click the ↹ Calibrate or press the button ↵ Enter on the keyboard. Enter this value in the input field located in the lower left corner of the ruler image. Specify the size of the diagonal of your screen in inches ("). You can calibrate it in one of the following two ways: □ How to use this online rulerįor the ruler to display correctly (i.e., in proportion to the actual physical size), it must be calibrated. The maximum length of the ruler (fully visible when displayed on a sufficient screen) is 20 inches, or 50 centimeters (500 millimeters) for the metric scale option. ![]() This online app works on both computers with a large screen (laptops, PCs, monoblocks or smart TVs) and mobile gadgets (phones, phablets, tablets, e-ink readers). You can make the necessary measurements on any device that allows you to browse the web. Table showing inch measurements converted to feet for measurements up to 20 feet in 12-inch increments.If you want to measure the actual size of a small object in inches or centimeters and you don’t have a real ruler at hand, this virtual on-screen online ruler will help you. Need a ruler? Try our free downloadable and printable rulers, which include both imperial and metric measurements. Rulers are available in imperial, metric, or a combination of both values, so make sure you get the correct type for your needs. We recommend using a ruler or tape measure for measuring length, which can be found at a local retailer or home center. You might be interested in our feet and inches calculator, which can add feet with other units of measurement such as inches, centimeters, or meters. Measurements in feet are most commonly taken using either a standard 12" ruler or a tape measure, though there are many other measuring devices available.įeet are sometimes referred to as linear feet, which are simply a measurement of length in feet. Using the prime symbol, 1 ft can be written as 1′. Feet can be abbreviated as ft for example, 1 foot can be written as 1 ft.įeet can also be denoted using the ′ symbol, otherwise known as a prime, though a single-quote (') is often used instead of the prime symbol for convenience. The foot is a US customary and imperial unit of length. ![]() The foot is a unit of length measurement equal to 12 inches or 1/ 3 of a yard.īecause the international yard is legally defined to be equal to exactly 0.9144 meters, one foot is equal to 0.3048 meters. The resulting quotient is the whole feet, and the remainder is the inches.
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