All changes to tower
| Date | Change | Source |
|---|---|---|
| 12 Jun 2020 | fr1: truss,layout added | Tim Jackson via e-mail |
| 29 Aug 2010 | URL amended | Tim Jackson via e-mail |
| 15 Jul 2009 | Tenor note added (and that of others); nominal: Ab+5c | Andrew Higson via pNBR |
| 1-3: nominal,canon,turning info added; frame info added | Andrew Higson via 00007792 | |
| 26 Feb 2004 | URL supplied | Tim Jackson via e-mail |