BS 561:1951

Specification for alternating-current line relays double-element 3-position (for railway signalling).

STANDARD published on 15.6.1951

English -
electronic design (pdf) (175.60 USD)

The information about the standard:

Designation standards: BS 561:1951
Note: WITHDRAWN
Publication date standards: 15.6.1951
The number of pages: 12
Approximate weight : 36 g (0.08 lbs)
Country: British technical standard
Category: Technical standards BS