GB 7427-1987

Location and width of the recording head gap for centre sound records on 16mm perforated magnetic film

NORMA vydaná dňa 1.1.1987

The information about the standard:

Designation standards: GB 7427-1987
Note: NEPLATNÁ
Publication date standards: 1.1.1987
Country: Chinese technical standard
Kategória: Technické normy GB