All changes to tower
| Date | Change | Source |
|---|---|---|
| 19 Aug 2023 | Fr1, Fr2: Truss and layout added; maker and date amended; Fr2: Material amended | Information provided by Lewis Benfield from personal visit with some details provided by George Dawson. via Frame backlog |
| 19 Aug 2021 | 1900 & 2011 overhauls added | George Dawson |
| 3 Sep 2016 | 1-3: frameid added; frame info added | David Sloman via e-mail |
| fr1,fr2: info amended | George Dawson via e-mail | |
| 5 May 2013 | Straight line roping noted | TimJ#189 via e-mail |
| 3 Dec 2006 | Wt is exact not approx | Nick Bowden#68 (ex GAD NBR spreadsheets & CMTurner 3s) via e-mail |