All changes to tower
| Date | Change | Source |
|---|---|---|
| 13 Jun 2020 | fr1: truss,layout added | Tim Jackson via e-mail |
| 22 Aug 2014 | 1-6: frameid added; frame info added | John Baldwin via database |
| 8 Apr 2013 | PN info amended - but CHECK first advised | TimJ (info Ely DA website) via e-mail |
| 22 Oct 2009 | 1-6: diam,nominal added | Chris Pickford via 00008195 |