All changes to tower
| Date | Change | Source |
|---|---|---|
| 16 Nov 2016 | 1-6: frameid added; fr1,fr2: added | David Sloman via e-mail |
| 3 Jun 2013 | Availability of toilet facility added | TimJ#190 via e-mail |
| 22 Oct 2007 | Nominals make ring nearer F# (tenor: F#+46c) | Chris Pickford (G&J per AAJB) via pNBR |