RISC OS S.V.R. S&T Department RISC OS
http://www.svrsig.org/ diags/S3243.htm

Afon Wen

This signalbox was situated a short distance from Pwellheli and there are two sketches, both dated May 1930, which show a 60 lever frame titled 'Arrangements Prior to Alterations' and a 75 lever frame titled 'Existing arrangements, alterations carried out Nov 1924'.

Both box diagrams are reproduced by kind permission of Kidderminster Railway Museum.