Technical drawing numbers
S649/1Record of amendments
S649/2Locking sketch
S649/3Mechanical locking table
S649/4Detection table
S649/5Electrical control table
S649/6Dog chart
S649/7Lever leads
S649/12Signal box diagram

‹‹UP  Click below to move to adjacent box  
Portbury Shipyard  ——  This box   ——   

The diagram below is a low-resolution version to indicate the content: a full-resolution 'pdf' file will be published on a CD-ROM entitled 'Great Western Railway Signal Box Diagrams - Section B'. For availability and ordering information, click on the image below.

This page last updated on 8th February 2010.