All changes to tower
| Date | Change | Source |
|---|---|---|
| 15 Feb 2017 | fr1: material amended | Philip Denton via e-mail |
| 13 Feb 2017 | fr1: truss added,layout amended; | Philip Denton via e-mail |
| fr1A: material amended,truss added | Philip Denton via e-mail | |
| 20 Feb 2012 | 4: historically important | David Knight via e-mail |
| 16 Apr 2011 | 1-5: nominal, canons, turning, frame id added; 1-3: wt amended; | Philip Denton via 00009227 |
| frame info added | Philip Denton via 00009227 |