All changes to tower
| Date | Change | Source |
|---|---|---|
| 30 Dec 2023 | Fr1,Fr2: material amended | Andrew Higson via Frame Backlog |
| 3 Jul 2022 | Fr1: diagonal | C J Pickford |
| 26 Jan 2016 | PN info added | Geoff Pullin (per J Ball, Branch Sec) via e-mail |
| 31 May 2013 | all: nominal,canons,turning added; fr1,fr2: truss,layout added; | Andrew Higson via 00010402 |
| Sct: (app)wt,frame id added; fr9: info added | Andrew Higson via 00010402 | |
| 21 Dec 2010 | 6,8: are historically important | David Sloman via e-mail |
| 20 Dec 2010 | 1-8: frame id added; frame info added | [James Hedgcock] via e-mail |