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Quantieme Perpetual Calendar

Traditionally, the watchmakers' language is French. Many technical terms that are widely used are French, think of, e.g., "tourbillon," "grande sonnerie," "chronographe à rattrapante," etc. When you find the term "quantième perpétuel" in the description of a watch, this watch has: a power-reserve indicator a calendar that includes the 400-year-rule a manual-wind movement with a power reserve of eight days a calendar that includes leap-years an automatic movement with a bi-directionally winding rotor A calendar that includes leap-years. Printed by Breitling on 11/2002 and printed in Switzerland. This volume details the History of Breitling for 50 Years of Flight. To detail describe each series of Breitling's Watch. The book is in a prefect condition! Louis Erard is giving a new lease of life to 62 movements found in the records of his Watchmaking House. If you want to see a didactically excellent explanation of the way how all these wheels, cams, and rods interact, you should read Huber/Banberry's book or, still better because it's animated, get the DVD from the Patek Philippe Museum; it contains a detailed explanation of Patek's perpetual calendar ref. 3940. The Perpetual Calendar will work fine for all of us for the rest of our lives (except for those few that will still be alive in the year 2100 ...). Berner simply defines it as "Device that changes the date at the end of each month including the 29th February in leap years." What sounds so simple requires a lot of knowledge to construct and a lot of horological precision workmanship to make. (A perpetual calendar adds about 100 parts to a movement.) info@quantieme.com With his new masterpiece powered by the famous and superbly fashioned Valjoux 88 mechanical calibre, Louis Erard has chosen to celebrate the Year 2000 in his own inimitable style.

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