Apparatus telegraph, printing start-stop, 5-element code. Methods of electric parameters measuring
NORMA vydána dne 1.1.1982
Designation standards: GOST 21137-81
Publication date standards: 1.1.1982
The number of pages: 15
Approximate weight : 45 g (0.10 lbs)
Country: Russian technical standard
Kategorie: Technické normy GOST
Implemented changes and corrections:
Amd. 8.86