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

專家解讀視頻
基本信息
標準編號: NEN ISO 1112:2009
發布時間:2009/3/1 0:00:00
標準類別:Standard
出版單位:Nederlands Normalisatie Instituut
標準頁數:4
標準簡介
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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