Cavern in Feet

Philip Balister philip at
Wed Oct 24 12:58:10 BST 2007

David A. Riggs wrote:
> On 10/23/07, Graham Mullan <graham.mullan at> wrote:
>> Ah but which feet do you use, The international foot or the US survey
>> foot? I gather the latter is 610 nm longer than the former.
> Being a nation firmly rooted in science, we've standardized on The
> President's foot, a size 10.5 running shoe - it was his idea!  ;-)

Here in Virginia, USA, we measure cave lengths in miles, not feet. But I 
use google to convert meters to miles when speaking with non-metric sorts.


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