All changes to tower
| Date | Change | Source |
|---|---|---|
| 21 Apr 2017 | 1-6: nominal,turning,frameid added; 2-6: canon info added; | Philip Denton via 00012089 |
| frame info added | Philip Denton via 00012089 | |
| 13 Sep 2013 | 1: wt amended,canon info added | Philip Denton via 00010508 |
| 4 Sep 2013 | 1: (approx) wt added | Neal Dodge via 00010500 |