All changes to tower
| Date | Change | Source |
|---|---|---|
| 22 Dec 2015 | 5: welded | Philip Denton via e-mail |
| 7 Jan 2012 | fr1: material clarified | John Baldwin via database |
| 5 Sep 2010 | 1: diam amended | Chris Pickford via 00008797 |
| 4 Sep 2010 | Tenor precise wt now available; nominal revised (G-9c) | Bob Parker via pNBR |
| 1-6: nominal amended, wt amended; 1: canon info added | Bob Parker via 00008796 | |
| 20 May 2006 | Tenor note is not G#; nominal added (G+31c) | Dave Kelly & Bob Parker via e-mail |