All changes to tower
| Date | Change | Source |
|---|---|---|
| 8 Jan 2018 | 3,4,5: diam amended | Tim Jackson via 00012696 |
| 29 Dec 2017 | frame: date amended | Tim Jackson via e-mail |
| 24 Sep 2016 | 1-6: nominal added | David Kelly via e-mail |
| 23 Jul 2010 | 3-6: turning added | John Baldwin via database |
| 1-6: frameid added; frame info added | James Clarke via e-mail |