![header thumbnail](/images/publishers\bsi_cover.gif)
BS 1050:1953
Superseded
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
![header thumbnail](/images/publishers\bsi_cover.gif)
Specification for visual indicator lamps for use in telephone and telegraph switchboards and for allied purposes
Available format(s)
Hardcopy
Superseded date
30-11-1984
Language(s)
English
Published date
01-01-1953
Publisher
Initial rating and life performance, selection for test, test conditions; appendix on photometry.
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.