All changes to tower
| Date | Change | Source |
|---|---|---|
| 6 Nov 2021 | 2: weight amended; 1-6: nominal added and key amended to G# major; 1-2,4-6: diameter amended S | Nigel Taylor's personal tuning records via David Sloman |
| 31 Jul 2012 | 1-6: turning, frame id added; frame info added | David Sloman via 00010025 |
| 14 Jan 2010 | 1,3,4,5: historically important ('listed' by CBC) | David Knight via e-mail |