The GMT watch is brilliant not because of its complexity but because of its simple ingenuity. Here’s how it works.

On May 2, 1952, 36 people boarded a De Havilland Comet jet owned by the British Overseas Airways Corporation (BOAC) and flew nonstop from London to Johannesburg. The Jet Age had officially begun. Pan Am quickly ordered 20 of Boeing‘s new 707 jetliners and built its WorldPort terminal at JFK while TWA countered with its own World Flight Center. It was a brave new world that saw cigarettes on planes but not a roller bag to be found.
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