Tidy Ruler 3-in-1

Math was never one of my favorite subjects in school. �Aside from the heavy textbook, we also had to remember to bring a plethora of additional implements: protractor, ruler, #2 pencil, pencil sharpener, calculator, and scrap paper. �The Tidy Ruler, available through Luckies of London, combines several of those wicked math tools into one. �A [...]

Source: http://the-gadgeteer.com/2011/06/07/tidy-ruler-3-in-1/

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