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Hi Henry, Blue Azimuth Tables are HO 120 formerly HO 261 circa 1940
which I have a copy.
Mike Burkes

On Oct 12, 11:19 am, "halb...@juno.com"  wrote:
> I am somewhat surprised at the time and space being devoted to Azimuth 
Tables lately. There were enough such tables printed at one time to satisfy 
most any taste and to establish an entirely new List devoted solely to The 
Azimuth.. To name but a few from memory, they included
> The Red Azimith Tables (HO 71) + expanded volume for artic use
> The Blue Azimuth Tables (HO ?) which extended the above for higher declinations
> Cugles Two Minute Azimuth Tables which were popular in the US MM during WWII
> Lecky's ABC Tables
> Burwood's Tables
> Most all short tabular methods as a bi-product of the intercept solution, 
except Martelli's original tables for the Time Sight solution
> The English, Germans, Spanish, and Italians all published their own tables in varied formats
> Pure trigonometrical solutions were also used as a bi-product of the Time 
Sight and Marc St Hillaire intercept method, and in many circumstances proved 
the most expedient, although many would use a separate set of tables to 
calculate the azimuth - why, I could never imagine.
> Regards,
> Henry


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