All changes to tower
| Date | Change | Source |
|---|---|---|
| 28 Apr 2013 | URL amended (...htm >> shtml) | Xenu check via URLbad |
| 21 Dec 2012 | URL amended | John Morris-Best, Webmaster Wirral Branch via URLbad |
| 25 Sep 2012 | URL amended | JCB via URLbad |
| 26 May 2009 | 1-4: canon info added | Sam Austin via 00007476 |
| 24 Oct 2007 | Tenor is not C but B and tuning IS diatonic | Sam Austin via e-mail |
| 20 Nov 2006 | Tuning description simplified | Sam Austin via e-mail |
| 23 Feb 2005 | URL added | Peter Humphreys via e-mail |
| 22 Feb 2005 | Tenor note added; tuning info added | George Dawson: Historians' digest 1002#2 via e-mail |
| 7 Aug 2004 | Wheels are broken | Tim Jackson#66 via e-mail |