All changes to tower
| Date | Change | Source |
|---|---|---|
| 3 Jul 2020 | 6-8: turning amended(actually 7/16) | Nigel Taylor via 00013887 |
| 11 Jul 2016 | Tenor note amended (was Ab; nominal: A-39c) | Nigel Taylor via pNBR |
| 1-8: nominal,canons,turning added; diam amended | Nigel Taylor via 00011702 | |
| 25 Nov 2015 | 1-8: frameid added; frame info added | David Sloman via e-mail |