Technical drawing numbers
S490/1Record of amendments
S490/2Locking sketch
S490/3Mechanical locking table
S490/4Detection table
S490/5Electrical control table
S490/6Dog chart
S490/7Lever leads
S490/12Signal box diagram

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Marsh Jcn [Bristol]  ——  This box   ——  Pensford & Bromley Collieries Sidings

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.