All changes to tower
| Date | Change | Source |
|---|---|---|
| 1 Nov 2021 | 1-6: nominal added | Nigel Taylor's personal tuning records via David Sloman |
| 12 Sep 2014 | 1-6: frame id added; Sct: 'founder',historically important added; | Philip Denton via 00010903 |
| frame info added | Philip Denton via 00010903 | |
| 6,Sct: canon info added | John Baldwin via database |