Optics and optical instruments. Opthalmic optics. Marking of spectacle frames.
NORMA vydána dne 28.2.1992
Designation standards: BS EN ISO 9456:1997
Note: NEPLATNÁ
Publication date standards: 28.2.1992
The number of pages: 10
Approximate weight : 30 g (0.07 lbs)
Country: British technical standard
Kategorie: Technické normy BS