All changes to tower
| Date | Change | Source |
|---|---|---|
| 1 May 2019 | 1-8: frameid added; frame info added | Tim Jackson via e-mail |
| 30 Apr 2019 | 1-8: canon info,turning added | [James Hedgcock] via e-mail |
| 18 Oct 2017 | 3,4,5,8: nominal added | Tim Jackson via 00012507 |
| 30 Aug 2017 | 1-8: diam added | David Sloman via 00012363 |
| 7 Aug 2016 | Name of ring added | TimJ #220 via e-mail |
| 14 Jul 2008 | Ringing not permitted added - see NAG website entry | Tim Jackson#138c via e-mail |
| 3 Oct 2006 | Not "Institute" but "School" (since 1955!) | Don Morrison via e-mail |