NEN ISO 1112-2009 标准详情
- 标准号:NEN ISO 1112-2009
- 中文标题:
- 英文标题:Horology - Functional And Non-functional Jewels
- 标准类别:荷兰国家标准NEN
- 发布日期:
Defines the technical definitions of functional and non-functional horological movement jewels. It also explains the different types of jewels used, and how this is to be marked on a timekeeping instrument or used in advertising.
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