All changes to tower
| Date | Change | Source |
|---|---|---|
| 11 Feb 2019 | partials added | Nick Bowden via e-mail |
| 15 Jul 2018 | Straight line roping added; tenor note added | TimJ via e-mail |
| 1-3:frameid added; frame info added | John Greenhough via e-mail | |
| 1-3: nominal,turning added; 1,2: canon info amended | Tim Jackson via e-mail | |
| frame: truss added | Tim Jackson via e-mail |