All changes to tower
| Date | Change | Source |
|---|---|---|
| 8 Sep 2020 | 1-8: turning added | [James Hedgcock] via e-mail |
| 28 Jan 2015 | 1-8: nominal,frame id,canon info added; 1-7 app wt added | David Kelly via e-mail |
| frame info added | David Kelly via e-mail | |
| 2 Nov 2012 | 1-8: founder amended | Peter Dyson via e-mail |