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File:Vintage Casio Combination Pocket Calculator And Cigarette Lighter, Model QL-10, Uses Butane Gas And Piezo Ignition, Made In Japan, Circa 1978 (29914290953).jpg - Wikimedia Commons
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Casio QL-10: the Calculator Lighter, 1981 The Casio QL-10, an arithmetic calculator with 8 digits precision and algebraic logic. 5 functions, 24 keys, LCD display. Manufactured in Japan. Works as a cigarette
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