Dermot McNally wrote:
> My favourite suggestion so far is that a second key be introduced -
> either for the "original" measurement (my favourite, since it retains
> the traditional meaning of the existing key) or for the normalised
> equivalent.
>   
This is what I was thinking all along. On the one hand you want the info 
as it is indicated in situ. On the other hand you want to be able to 
parse it efficiently. A second field seems like the most obvious 
solution. Maybe name spaced: maxheight:imperial = 3 ft.

Polyglot

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