BS 427:1931

Diamond pyramid hardness numbers.

NORMA vydaná dňa 27.10.1958

The information about the standard:

Designation standards: BS 427:1931
Note: NEPLATNÁ
Publication date standards: 27.10.1958
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategória: Technické normy BS