| Technical drawing numbers | |
| S2122/1 | Record of amendments | 
| S2122/2 | Locking sketch | 
| S2122/3 | Mechanical locking table | 
| S2122/4 | Detection table | 
| S2122/5 | Electrical control table | 
| S2122/6 | Dog chart | 
| S2122/7 | Lever leads | 
| S2122/12 | Signal box diagram | 
A replacement box was built here in about December 1892 fitted with a 27 lever double twist frame.
| ‹‹UP Click below to move to adjacent box DOWN›› | ||
| Tirydail | —— This box —— | Pantyffynnon (South) | 
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 - South Wales'. For availability and ordering information, click on the image below.
This page last updated on 8th October 2010.