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    Re: Sexagesimal vs Degree-minute-tenths of minutes angles
    From: John D. Howard
    Date: 2018 Nov 15, 07:51 -0800

    Ed,

    I think it was the popular use of the sextant with worm gear - drum.  Easy to mark off tenths.  Also the " New Navigation " where you drew a line on a plotting chart.  One minute equal one mile.  Easy to mark off tenths of a mile.

    John H.  41N  100W

       
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