All changes to tower
| Date | Change | Source |
|---|---|---|
| 5 Sep 2014 | 5,6: diam amended; ex4: nominal added | Tim Jackson via 00010882 |
| 2 Feb 2012 | 1,2,3,5,6: nominal added; 4: nominal amended | David Kelly via e-mail |
| 10 Oct 2009 | All: frame id added; frame info added | Simon Ridley via e-mail |