All changes to tower
| Date | Change | Source |
|---|---|---|
| 21 Oct 2018 | frame: layout amended | Mike Chester via e-mail |
| 20 Oct 2018 | frame: truss,layout added | Mike Chester via e-mail |
| 15 Oct 2016 | 1-6: frameid added; frame info added | David Sloman via e-mail |
| 13 Feb 2009 | PN info added | Nick Parkes via e-mail |