| Technical drawing numbers | |
| n/a/1 | Record of amendments |
| n/a/2 | Locking sketch |
| n/a/3 | Mechanical locking table |
| n/a/4 | Detection table |
| n/a/5 | Electrical control table |
| n/a/6 | Dog chart |
| n/a/7 | Lever leads |
| n/a/12 | Signal box diagram |
| ‹‹UP Click below to move to adjacent box DOWN›› | ||
| Polperro Tunnel | —— This box —— | Truro Viaduct |
No SRS diagram is available.
This page last updated on 24th May 2010.