BS 6820:1987

Method for measuring and designating the size of rings used in jewellery.

NORMA vydaná dňa 1.9.1987

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The information about the standard:

Designation standards: BS 6820:1987
Note: NEPLATNÁ
Publication date standards: 1.9.1987
The number of pages: 6
Approximate weight : 18 g (0.04 lbs)
Country: British technical standard
Kategória: Technické normy BS