| Technical drawing numbers | |
| S3280/1 | Record of amendments |
| S3280/2 | Locking sketch circa 1913(full size version acquired since publication of update CD) |
| S3280/3 | Mechanical locking table |
| S3280/4 | Detection table |
| S3280/5 | Electrical control table |
| S3280/6 | Dog chart |
| S3280/7 | Lever leads |
| S3280/12 | Box diagram |
Circa 1913 sketch added.
No SRS diagram is available.
This page last updated on 8th March 2013.