Grand Seikoのインスタグラム(grandseikoofficial) - 10月31日 19時47分

#GrandSeikoTenStories
A design code created around sharp lines and the sparkle of quality - from the Grand Seiko Ten stories.

Shade, shadow and strong lines. These three elements formed the cornerstone of Grand Seiko’s design, but before that design could be realized, a new level of precision in manufacturing was required and it came about through a change in the way that measurements were made. Until 1960, Seiko had been using a special unit called “ligne,” which was the mainstream standard in the watchmaking industry but, in 1962, Seiko changed the unit to the millimeter. This resulted in a change in the minimum unit from 1/4 ligne (approx. 0.56 mm) to 0.1 mm, allowing a more precise design of the watch case and exterior components.
#GrandSeikoTenStories #GrandSeikoStyle #GrandSeikoOfficial #GrandSeiko #GS #manufacture #watch #watches #watchfam #madeinjapan

https://www.grand-seiko.com/10stories/vol2/1/

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