
Jewellery; Ring-sizes; Definition, Measurement And Designation
出版:Swiss Standards

專家解讀視頻
Specifies the method for measuring the size of rings for the purposes of designating ring-sizes to be used in jewellery.
ISO 8653:1986 - Identical
DIN EN 28653 (1993-03) - Identical
DIN EN 28653 : 1993 - Identical