All changes to tower
| Date | Change | Source |
|---|---|---|
| 10 Jul 2017 | 1-3: frameid added; frame info added | David Sloman via e-mail |
| 13 Jun 2010 | Nominals indicate non-standard tuning | Tim Jackson via pNBR |
| 25 May 2010 | Tenor note added | George Dawson via pNBR |
| 1,3: (not dated); 3: founder amended; 2,3: diameter amended | George Dawson via e-mail | |
| 1-3: nominal(& note) added | George Dawson via e-mail |