All changes to tower
| Date | Change | Source |
|---|---|---|
| 21 May 2016 | frame: truss,layout added | Mike Chester via e-mail |
| 18 Aug 2009 | 1-8: turning, frameid added; 1-7: nom'l added; frame info added; | Andrew Higson via 00008046 |
| 1,2,4-8: diam amended | Andrew Higson via 00008046 | |
| 1 Oct 2006 | Tenor nominal added (Eb-17c) | Andrew Higson via pNBR |