The best way to measure your feet for running shoes is by heading to the shoe store and getting fitted by an expert. But if you need to troubleshoot sizing on your own, all you need is a ruler, paper, ...

The ruler is accurate and can be used to get the measurement of objects and the distance between objects in the work area. If you click and drag from the ruler to the canvas, you will get guides.

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Size Matters: Measuring distances between molecules is no simple task, but a team of German researchers has developed a new method that could revolutionize biological research and possibly even impact ...