All changes to tower
| Date | Change | Source |
|---|---|---|
| 16 Jun 2020 | 1: diam amended | Chris Pickford via 00013835 |
| 20 May 2018 | 1-6: turning added; 1: nominal added | Chris Pickford via 00012863 |
| 8 Apr 2018 | 1-6: canons,frameid added; 2-6: nominal added,diam amended; | Chris Pickford via 00012817 |
| frame info added | Chris Pickford via 00012817 |