All changes to tower
| Date | Change | Source |
|---|---|---|
| 5 May 2016 | PN info added (shared, but checking advisable) | Jack Hunt via e-mail |
| 26 Jun 2009 | Tenor note not F; nominal E+33c | Andrew Higson via pNBR |
| 1-6: nominal added; 2,4,5,6: diam amended | Andrew Higson via 00007642 | |
| 1,2,4,5,6: turned (B&#) | John Baldwin via database |