All changes to tower
| Date | Change | Source |
|---|---|---|
| 11 Oct 2019 | 1,2,3: pNBR wt matches JT records but not tower notice | TimJ (REMRKS246) via e-mail |
| 18 Sep 2009 | 1-8: nominal, canons, turning, frame id added; 1-3: wt corrected | Andrew Higson via 00008121 |
| 2,5,8: diam amended; frame info added | Andrew Higson via 00008121 | |
| 27 May 2009 | 5: founder amended | George Dawson via e-mail |