Historical methods of bell tuning

[Bill Hibbert]

Richard Offen's fascinating note of a couple of weeks ago describing 
Whitechapel's tuning methods of 100 years ago caused me to investigate 
whether there were other descriptions of historical tuning methods. I 
am familiar with:
* the description in Elphick's 'Craft of the Bellfounder', part of 
which is copied verbatim from:
* Fred Sharpe's description of Rudhall's tuning machine in 'Church 
Bells of Herefordshire'
* André Lehr's description of the Hemonys' methods.

Apart from these, I have drawn a blank. Does anyone know of other 
written sources I can investigate for more information?

Thanks,

Bill H