All changes to tower
| Date | Change | Source |
|---|---|---|
| 26 Jul 2017 | frame: material amended | John Greenhough via e-mail |
| 24 Jul 2017 | frame: date,maker,truss added,layout amended | John Greenhough via e-mail |
| 10 Aug 2010 | 1-3: frame id added; 2,3: turning added; frame info added | Alan Birney via 00008774 |