All changes to tower
| Date | Change | Source |
|---|---|---|
| 8 Jul 2025 | 1938 overhaul description, tuning year added; 1-8: turning added; frame Fr1: material amended, truss, layout added | Tim Jackson, from personal visit. Information taken from board in the tower. |
| 15 Jul 2012 | (W+P) URL added | Rosemary Oakeshott via e-mail |
| 2 Jun 2009 | 1-8: canon info added; 1-7: nominal added | Andrew Higson via 00007526 |
| 28 Apr 2009 | 5-8: all hist imp; 5,6,7: canon info added; 6,7: date, fdr corr'd | John Baldwin via database |
| 8: nominal added | John Baldwin via database |