Semi-Formal Pocket Gear Train

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Allow me to introduce an innovative way to grasp the concept of gear ratios. Every turn the large gear makes, the small one completes twice as many turns. These gears are engineered so that one can easily snap-fit a single 0.25-inch neodymium magnet into their centers. They also enable the wearer to effortlessly drop the term "neodymium" at social gatherings. If you're like me and prefer a secure approach, you might attach the magnets firmly in place with a small amount of super glue to prevent accidental harm to pets and young children's intestines. A second magnet on the opposite side of your attire will keep the gears securely fastened. I suggest using these magnets: http://amzn.to/1oWX7OJ and the adhesive of your choice from the Space Age selection. This method won't damage clothing and may even boost self-confidence. Alternatively, you can find a more advanced design on Shapeways: https://www.shapeways.com/model/1454599/semi-formal-pocket-gear-train.html if you want something more sophisticated than plastic.