All changes to tower
| Date | Change | Source |
|---|---|---|
| 19 May 2017 | 1-3: frameid added; frame info added | David Sloman via e-mail |
| 1,2: (app)wt added | John Baldwin via database | |
| 5 Feb 2012 | 1-3: nominal added | Nick Bowden via 00009844 |
| 6 May 2003 | Not 2.25cwt; tuning added | Nick Bowden 28 via e-mail |