All changes to tower
| Date | Change | Source |
|---|---|---|
| 26 Nov 2021 | Toilet added | Jane Hough |
| 23 Jun 2019 | 1-8: canons,turning added | Tim Jackson via 00013482 |
| 24 Dec 2017 | 1-8: nominal added; 8:diam amended | Tim Jackson via 00012663 |
| 25 Oct 2016 | 1-8: frameid added; frame info added | John Baldwin via database |