All changes to tower
| Date | Change | Source |
|---|---|---|
| 25 Jun 2020 | fr1: material amended | Tim Jackson via e-mail |
| 31 May 2013 | Tenor note not Ab; nominal A-30c | Andrew Higson (JT nominals) via pNBR |
| 1-6: nominal,canons,turning,frameid added; 4-6: diam amended; | Andrew Higson via 00010401 | |
| frame info added | Andrew Higson via 00010401 | |
| 14 Mar 2007 | PN changed from Mon with exceptions to Wed weekly | Ben Willetts via e-mail |