All changes to tower
| Date | Change | Source |
|---|---|---|
| 17 Nov 2018 | 1-6: turning added; 5,6: canon info amended | Tim Jackson via 00013172 |
| 4 Nov 2018 | 1-6: canon info,frameid added; frame info added | Tim Jackson via 00013140 |
| 13 Aug 2010 | 1: diam added | Chris Pickford via 00008780 |
| 3 Sep 2007 | URL added | Mike Chester via e-mail |
| 2 Sep 2007 | Tenor note not G; nominal added: Ab-30c | Gordon Birks via pNBR |
| 3 Dec 2003 | Tenor not 15cwt | Nick Bowden#34(quoting Greenhough Bells of McrDio) via e-mail |