All changes to tower
| Date | Change | Source |
|---|---|---|
| 29 Mar 2017 | 1,2,6: nominal amended; 3,4,5: nominal added | David Kelly via e-mail |
| 10 Dec 2011 | 2-5: (app) wt added; 3-5: diam added; 1-6: frameid added; | John Baldwin via database |
| frame info added | John Baldwin via database | |
| 20 Dec 2008 | URL amended | Tim Jackson#148 via e-mail |
| 19 Jul 2007 | URL added | Mike Chester via pNBR |