Geek Trivia: Map Makers Include What Device To Identify Their Maps In Lawsuits? 00:06:00 Map Makers Include What Device To Identify Their Maps In Lawsuits? Micro Text in the Compass Rose Ultraviolet Ink Paper Towns Watermarks Think you know the answer? from How-To Geek https://ift.tt/2GZy0KU via IFTTT Twitter Facebook Google Tumblr Pinterest
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