All changes to tower
| Date | Change | Source |
|---|---|---|
| 17 Aug 2022 | Fr1: layout added; Fr2: truss and layout added | Ranald Clouston papers 1956 |
| 12 May 2017 | 1-3: canon info,turning,frameid added; frame info added | Philip Denton via 00012142 |
| 13 Mar 2011 | Tuning info added | Tim Jackson#172 (info: David Cawley quoting P Taylor) via e-mail |
| 9 Jan 2011 | Additional tower | TimJ#170 via e-mail |