All changes to tower
| Date | Change | Source |
|---|---|---|
| 7 Oct 2024 | Fr1: material amended, truss, layout added | Jack Pease from the Christopher Dalton papers |
| 24 Apr 2020 | 2: canon info amended | Fred Mills via 00013710 |
| 26 Feb 2016 | 1-8: canon info added; 1-7: diam added | Rod Bickerton via 00011526 |
| 25 Jan 2004 | URL changed | Gary J Sheppard: SDGR webmaster via e-mail |
| 8 Jan 2004 | URL added | Gary J Sheppard: SDGR webmaster via e-mail |