All changes to tower
| Date | Change | Source |
|---|---|---|
| 12 Nov 2018 | frame: truss amended | Tim Jackson via e-mail |
| 7 Nov 2018 | frame: material,layout added | Mike Chester via e-mail |
| 20 Feb 2012 | 6: historically important | David Knight via e-mail |
| 30 Oct 2011 | 1-6: frame id added; (listed) frame info added | David Knight via e-mail |