Breguet Marine Equation Marchante 5887 PT tourbillon cage

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Reading Time: 4 minutes On 7 Messidor Year IX – in other words, June 26, 1801 – master watchmaker Abraham-Louis Breguet patented a new kind of regulator: the tourbillon. Five years later, in 1806, the public turned out in large numbers to attend the National Exhibition of Industrial Products in Paris, where visitors wereContinue Reading