All changes to tower
| Date | Change | Source |
|---|---|---|
| 17 Nov 2017 | frame: date amended,maker added,material,truss deleted | Graham Clifton via e-mail |
| 16 Nov 2017 | 1-5: frameid added; frame info added | David Sloman via e-mail |
| 19 Apr 2009 | 1-5: nominal added | Bill Hibbert via 00007299 |
| 14 Jan 2004 | Exact wt from White's 1998 board in tower | Tim Jackson #56 via e-mail |