All changes to tower
| Date | Change | Source |
|---|---|---|
| 2 Sep 2016 | PN info added | Izabelle Bimson via e-mail |
| 19 Oct 2012 | 1-8: turning, frame id added; Svc: added; frame info added | Andrew Higson via 00010110 |
| 8: canon info amended | Andrew Higson via e-mail | |
| 24 Oct 2010 | 1-8: nominal added; 2,7: diam added | Nick Bowden via 00008897 |