All changes to tower
| Date | Change | Source |
|---|---|---|
| 23 Jul 2017 | 1-8: canon info added; 1-7: diam added; 6: wt amended; | Chris Pickford via 00012313 |
| 1,2,3,5,6: turning added; frame: date amended,mat'l,layout added | Chris Pickford via 00012313 | |
| 22 Aug 2010 | 1-7: app wt added; 1-8: frame id added; frame info added | Philip Denton via e-mail |
| 23 Mar 2007 | Tenor nominal added (D+15c) | Peter Davies via pNBR |
| 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 |