All changes to tower
| Date | Change | Source |
|---|---|---|
| 16 Nov 2020 | 8: date amended | Roger Barber via 00014126 |
| 22 Jul 2020 | 1-8: turning added; 1-4: canon info added | [James Hedgcock] via 00013918 |
| 1 Apr 2018 | PN info amended | TimJ (info: Rosalind Martin) via e-mail |
| 19 Nov 2014 | 2: nominal added; 1-8: frameid added; frame info added | Tim Jackson via 00010973 |
| 15 Jul 2012 | (W+P) URL added | Rosemary Oakeshott via e-mail |
| 17 Aug 2009 | 1,3-8: nominal added | Sam Austin via 00008038 |