All changes to tower
| Date | Change | Source |
|---|---|---|
| 10 Jul 2021 | URL amended | Tim Jackson |
| 21 Sep 2017 | 1-4: nominal added; 1-3: diam added | Chris Pickford via 00012448 |
| 1-4: turning added; 1,4: canons added; frame: date,maker added | John Baldwin via database | |
| 20 Sep 2017 | 1-4: frameid added; frame info added | David Sloman via e-mail |
| 13 Aug 2014 | URL added | Julia Deady via e-mail |
| 1 Apr 2004 | GF added | Michael Williams via e-mail |