Description
A larger cased version of the McKenzie & Holland signal lamp. Dimensions are approximately 14½mm high x 11mm wide across the lenses.
This pattern of lamp was used by the North Eastern, Great Eastern, Taff Vale, Rhymney, North Staffordshire, and Highland railway companies.
Post-grouping conversion of signals to upper quadrant arms normally saw replacement of the lamp with a more modern type (SC011 or SC025), as the lamp would have to move from the right to the left hand side of the post.