BS 398:1930

Symmetrical light distributions from light fittings.

NORMA vydána dne 6.10.1930

The information about the standard:

Designation standards: BS 398:1930
Note: NEPLATNÁ
Publication date standards: 6.10.1930
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategorie: Technické normy BS