BS 90:1919

Recording (graphic) ammeters, voltmeters and wattmeters.

NORMA vydaná dňa 11.7.1919

The information about the standard:

Designation standards: BS 90:1919
Note: NEPLATNÁ
Publication date standards: 11.7.1919
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategória: Technické normy BS