[Marble-devel] Map Scale

[Peter Morgan]

I notice that the units are..
miles, ft, and kilometre, metre

So can I put a spanner in the works about what I require..

==============
Aviation
==============

In aviation, the distance is in
nautical miles
http://en.wikipedia.org/wiki/Nautical_mile
The *nautical mile* (symbol *M*, *NM* or *nmi*) is a
unit<http://en.wikipedia.org/wiki/Units_of_measurement>
 of length <http://en.wikipedia.org/wiki/Length> that is approximately
one minute
of arc <http://en.wikipedia.org/wiki/Minute_of_arc> measured along any
meridian <http://en.wikipedia.org/wiki/Meridian_(geography)>. By
international agreement it has been set at 1,852
metres<http://en.wikipedia.org/wiki/Metre> exactly
(about 6,076 feet).
(and speed is in knots)

and altitude is in feet (apart from some areas who are switching to metric
ie metres)

So first thing I want is to have the option of distance in NM ??

Any tips on how to approach that.. ??

TIA
Pete
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