All changes to tower
| Date | Change | Source |
|---|---|---|
| 27 Oct 2019 | fr1: date,material amended | Tim Jackson via e-mail |
| 7 Nov 2018 | 1-5: canons,turning added; frame: truss,layout added | Robert Palmer via 00013157 |
| 15 Dec 2017 | Tenor note (and ring key) not B (nominal Ab+15c) | Chris Pickford (JT 1924 data) via pNBR |
| 1-5: nominal added | Chris Pickford via 00012645 | |
| 12 Nov 2016 | 1-5: frameid added; frame info added | John Baldwin via database |
| 17 Feb 2012 | 3: historically important | David Knight via e-mail |