All changes to tower
| Date | Change | Source |
|---|---|---|
| 2 Sep 2011 | 1-5: wt(app), diam added | Chris Pickford via 00009670 |
| 1 Sep 2011 | 1-6: nominal added | David Kelly via e-mail |
| 25 Jan 2004 | URL changed | Gary J Sheppard: SDGR webmaster via e-mail |
| 8 Jan 2004 | URL added | Gary J Sheppard: SDGR webmaster via e-mail |