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When we compare things, the best way to do so is to measure their attributes. Which is more expensive? Which is taller? Which takes longer? From a very young age children naturally begin to ask these questions when they are given choices. Today, 95% of the world uses the metric system, but this was not always so. A colorful variety of measurements have been used in the past. Many of these are easily recognized, however, there are some which are old-fashioned, foreign, or downright bizarre. Here are just ten...

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