John Carmichael wrote

>What definition or combination of definitions should I use?
>
>What sundials have I missed that might be record-holder contenders for the
>largest sundial?
>
>How should I answer this difficult question that everybody's asking?
>
>Thanks

When this topic was aired some years ago I recall suggesting that the 
size of a dial should be judged by the VOLUME of the smallest imaginary 
rectilinear box which would contain all its elements.

Tony Moss
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