All changes to tower
| Date | Change | Source |
|---|---|---|
| 21 Jun 2019 | 1-8: turning added | Tim Jackson via 00013471 |
| 30 May 2016 | 1-8: frameid added; frame info added | John Baldwin via database |
| 24 Apr 2009 | 1-7: nominal added; 2,4,5: diam corrected; 4,5,6,7: wt corrected | Andrew Higson via 00007346 |