[Tagging] What is the unit of seamark:light:range?

[Andrew Davidson]

The symbol for nautical mile can be M, NM, Nm, or nmi 
(https://www.bipm.org/utils/common/pdf/si_brochure_8_en.pdf p.127)

M is not a good choice because it's too close to m (metre), M (mile 
Roman, Irish, survey, international...), or M (mega).

On 10/01/18 20:19, Martin Koppenhoefer wrote:
> 
> 
> the symbol for nautical miles is "NM"
> 
> Cheers,
> Martin
> 
> 
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