All changes to tower
| Date | Change | Source |
|---|---|---|
| 23 Feb 2015 | 1-6: canon info added; frame info added | David Sloman via 00011075 |
| 22 Feb 2015 | 1-6: nominal added; 1-5: diam,wt amended | Tim Jackson via 00011070 |
| 10 Jan 2004 | Slight change to dedication to match Crockford entry | JCB via JCB |