◆ドイツ口腔インプラント学会・指導医( 旧：国際口腔インプラント学会・指導医 )
◆日本歯科レーザー学会認定医
◆日本口腔インプラント学会会員
◆日本再生歯科医学会会員
【 略歴 】
1969年生まれ
日本歯科大学新潟歯学部卒
新潟大学歯学部付属病院にて臨床研修後同大学第一保存学教室に入局、岩久教授の下で３Mix-mp法を学ぶ
2002年 医療法人社団伸整会に勤務
2006年 ドイツフライブルグ大学口腔外科にてインプラントアドバンスサージカルコース修了
2010年 ドイツ口腔インプラント学会・指導医取得
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Understanding COSC Certification and Its Importance in Horology
COSC Certification and its Demanding Criteria
COSC, or the Controle Officiel Suisse des Chronometres, is the official Swiss testing agency that verifies the accuracy and precision of timepieces. COSC validation is a mark of excellent craftsmanship and trustworthiness in chronometry. Not all timepiece brands follow COSC certification, such as Hublot, which instead adheres to its own demanding criteria with movements like the UNICO calibre, attaining similar accuracy.
The Art of Exact Timekeeping
The central system of a mechanized watch involves the mainspring, which delivers power as it unwinds. This system, however, can be vulnerable to environmental elements that may affect its precision. COSC-accredited mechanisms undergo demanding testing—over 15 days in various circumstances (5 positions, three temperatures)—to ensure their resilience and reliability. The tests assess:
Mean daily rate precision between -4 and +6 secs.
Mean variation, maximum variation levels, and impacts of temperature changes.
Why COSC Validation Is Important
For watch fans and collectors, a COSC-validated timepiece isn’t just a item of tech but a demonstration to enduring excellence and precision. It represents a watch that:
Presents exceptional reliability and accuracy.
Offers guarantee of quality across the complete construction of the watch.
Is apt to retain its worth more effectively, making it a wise choice.
Popular Timepiece Brands
Several famous brands prioritize COSC certification for their timepieces, including Rolex, Omega, Breitling, and Longines, among others. Longines, for instance, offers collections like the Archive and Spirit, which feature COSC-accredited mechanisms equipped with innovative materials like silicone equilibrium springs to boost resilience and performance.
Historical Background and the Development of Timepieces
The concept of the chronometer originates back to the requirement for accurate timekeeping for navigation at sea, emphasized by John Harrison’s work in the 18th cent. Since the formal establishment of COSC in 1973, the validation has become a yardstick for assessing the precision of luxury watches, sustaining a tradition of superiority in horology.
Conclusion
Owning a COSC-validated watch is more than an visual choice; it’s a commitment to quality and accuracy. For those valuing precision above all, the COSC accreditation offers peacefulness of thoughts, guaranteeing that each accredited timepiece will function reliably under various conditions. Whether for personal satisfaction or as an investment decision, COSC-accredited timepieces stand out in the world of watchmaking, carrying on a legacy of precise chronometry.
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