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    Example Ex-Meridian using Slide Rule
    From: Greg Rudzinski
    Date: 2012 Mar 8, 13:10 -0800

    3/8/2012 UT 18:00:28 ZD +5 LMT 13:00:28
    Latitude 27* 41' N Longitude 80* 24' W

    Sun GHA 87* 28.1'
    LHA 7* 04.1' (meridian angle) = 28.3 minutes time (t)
    Dec 4* 31.2' S

    Bowditch Table #24 (a) = 3.25
    (t) = 28.3
    (t)(t) = 800

    (a)(t)(t)/60 = XM Corr.'
    (3.25)(28.3)(28.3)/60 =
    (3.25)(800)/60 =
    (2600)/60 = 43.3'

    Hs 57* 06.0' (bubble octant)
    ref. - 0.5'
    Ho 57* 05.5'
    +43.3' XM Corr.
    57* 48.8'
    Dec+4* 31.2' S
    62* 20.0'
    27* 40.0' N Latitude (90*-62* 20.0')

    Pic 81 Bowditch Table #24
    IMG 1090 Slide Rule: Meridian Angle x 4 minutes of time for time to Meridional Passage (t)
    IMG 1092 Slide Rule: (t)(t)
    IMG 1094 Slide Rule: (a)(t)(t)
    IMG 1096 Slide Rule: (a)(t)(t)/60
    IMG 1102 Ti 36x Pro display: (a)(t)(t)/60

    Greg Rudzinski


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