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Horology - Functional And Non-functional Jewels
出版:Nederlands Normalisatie Instituut

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基本信息
標(biāo)準(zhǔn)編號(hào): NEN ISO 1112:2009
發(fā)布時(shí)間:2009/3/1 0:00:00
標(biāo)準(zhǔn)類別:Standard
出版單位:Nederlands Normalisatie Instituut
標(biāo)準(zhǔn)頁數(shù):4
標(biāo)準(zhǔn)簡(jiǎn)介
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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