Electrotechnical equipment. Standard directions of movement for actuators which control the operation of electrical apparatus
NORMA vydána dne 1.7.1990
Designation standards: GOST 21991-89
Publication date standards: 1.7.1990
The number of pages: 10
Approximate weight : 30 g (0.07 lbs)
Country: Russian technical standard
Kategorie: Technické normy GOST