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Peek over walls and look around corners with a periscope—a long tool that uses two mirrors to show you hard-to-reach places. Over at how-to site Instructables, they've got the step by step for putting together a periscope using a thin mints box, duct tape, two small mirrors, and an X-Acto knife. The kids will love this one.
Look Around Corners and Over Walls with a DIY Periscope
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12:00 PM on Sat Jul 19 2008
By Gina Trapani
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