
Vitreous enamelled steel reflectors for electric lighting open dispersive type no 1.
NORMA vydaná dňa 1.8.1927
Designation standards: BS 232:1926
Note: NEPLATNÁ
Publication date standards: 1.8.1927
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategória: Technické normy BS