The earliest evidence of a magnifying device was a joke in Aristophanes's The Clouds from 424 BC, where magnifying lenses to start kindling were sold in a pharmacy, and Pliny the Elder's "lens", a glass globe filled with water, used to cauterize wounds.
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A Coddington magnifier provides higher magnification with improved image quality.
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Many modern Guía Roji editions include a plastic flat magnifying glass, entire Metro networks for Mexico City and Monterrey, and, for the Mexico City edition, a folding map containing the Distribuidor Vial and the Centro Histórico.
The stamp featured Tintin and Snowy with a magnifying glass examining a stamp depicting Captain Haddock.