All changes to tower
| Date | Change | Source |
|---|---|---|
| 3 Oct 2020 | 1-6: turning added; fr1: truss,layout added; | Tim Jackson via e-mail |
| fr2: material,layout added | Tim Jackson via e-mail | |
| 2 Oct 2014 | 1-6: frameid added; frame info added | Philip Denton via 00010923 |
| 11 Dec 2010 | 4,5,Clk: canon info amended; 5: date amended | David Sloman via e-mail |
| 5 Oct 2004 | Tenor nominal added | David Kelly via e-mail |