All changes to tower
| Date | Change | Source |
|---|---|---|
| 12 Jun 2020 | 2: turning amended | Tim Jackson via e-mail |
| 8 Oct 2019 | 1: nominal added,diam amended; 1-6: turning,frameid added | Tim Jackson via e-mail |
| fr1,fr2: details added | Tim Jackson via e-mail | |
| 17 Apr 2007 | Tenor nominal added (E+18c) | Andrew Higson via pNBR |
| 20 May 2004 | Fri PN added | Richard Johnson via e-mail |