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informácia z prezídia Doporučený

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v   členskej  sekcii sa   nachádza informácia  z  prezídia  OZH,  kotré sa  konalo  21. 2. 2017  v  Bratislave 

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    Understanding COSC Certification and Its Importance in Horology
    COSC Accreditation and its Demanding Standards
    Controle Officiel Suisse des Chronometres, or the Official Swiss Chronometer Testing Agency, is the official Swiss testing agency that certifies the accuracy and precision of timepieces. COSC validation is a mark of superior craftsmanship and dependability in chronometry. Not all watch brands follow COSC certification, such as Hublot, which instead follows to its proprietary strict standards with mechanisms like the UNICO, attaining similar accuracy.

    The Science of Exact Chronometry
    The central mechanism of a mechanical watch involves the mainspring, which provides power as it unwinds. This system, however, can be vulnerable to environmental factors that may affect its accuracy. COSC-certified movements undergo rigorous testing—over fifteen days in various conditions (five positions, 3 temperatures)—to ensure their resilience and reliability. The tests assess:

    Mean daily rate precision between -4 and +6 secs.
    Mean variation, peak variation levels, and effects of temperature variations.
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    Well-known Timepiece Manufacturers
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    Historic Context and the Development of Chronometers
    The concept of the chronometer dates back to the need for exact timekeeping for navigational at sea, highlighted by John Harrison's work in the eighteenth cent. Since the official establishment of Controle Officiel Suisse des Chronometres in 1973, the certification has become a benchmark for evaluating the accuracy of luxury watches, sustaining a legacy of excellence in watchmaking.

    Conclusion
    Owning a COSC-validated watch is more than an visual choice; it's a dedication to excellence and accuracy. For those valuing accuracy above all, the COSC validation provides peacefulness of thoughts, ensuring that each validated watch will function dependably under various circumstances. Whether for personal contentment or as an investment decision, COSC-validated watches distinguish themselves in the world of horology, maintaining on a legacy of meticulous chronometry.

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