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Virtual Ruler!! Need to measure something, but don't have a ruler...bam. It makes the ruler accurate by detec… | Online ruler, Printable ruler, Free printable cards
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Bluegrams Screen Ruler: A lightweight and configurable ruler tool for Windows Desktop. | AlternativeTo
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Stretch Screen] Ruler not floating on startup · Issue #47 · phetsims/masses-and-springs-basics · GitHub
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