All changes to tower
| Date | Change | Source |
|---|---|---|
| 11 Jan 2020 | 1-5: nominal added | Tim Jackson via e-mail |
| 13 Jul 2010 | 1-5: frameid added; frame info added | James Clarke via e-mail |
| 20 Oct 2008 | Precise tenor wt supplied (not 6cwt) | Nick Bowden (Scott: Devon) via pNBR |