All changes to tower
| Date | Change | Source |
|---|---|---|
| 11 Feb 2021 | 6: nominal added; Key changed to G# S | WBF records (Richard Offen) via Email |
| 23 Sep 2013 | 1-6: date amended; 1: wt amended | Philip Denton via 00010519 |
| 18 Dec 2011 | 1-6: diam, canon info, frame id added; frame info added | John Baldwin via database |
| 24 Mar 2008 | Tue (exc last) PN info added | David Floyd (Assn webmaster) via e-mail |