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    Re: Another crazy sextant pic
    From: Gary LaPook
    Date: 2015 Oct 26, 16:53 +0000
    It's  a standard "clamp screw vernier" sextant. You release the clamp and move the index arm until the sun is close to the horizon in the horizon mirror and the tighten up the clamp. Then you make fine adjustments with the screw. The range of adjustment is limited by the length of the screw so you want it set to mid range before you clamp the index arm .

    gl

    From: Lu Abel <NoReply_LuAbel@fer3.com>
    To: garylapook---.net
    Sent: Monday, October 26, 2015 8:52 AM
    Subject: [NavList] Re: Another crazy sextant pic

    I forwarded the link to some friends who know celestial but are not NavList members.

    When one inserts a link into Yahoo mail, it actually shows the first few lines of the link's contents, not just the URL itself.   For some weird reason, this Yahoo expansion showed a taller picture - uncropped at the bottom - of the sextant user:

    https://s.yimg.com/vv//api/res/1.2/63H7vYILozSzSJdubIjmUQ--/YXBwaWQ9bWFpbDtmaT1maWxsO2g9MTY4O3B5b2ZmPTA7dz0xNjg-/http://www.trbimg.com/img-562c5f98/turbine/la-na-celestial-navigation-20151025.cf.jpg

    From that, you can see that this thoroughly modern sextant such as our midshipmen will be using does not have a micrometer drum!!!   Welcome to the 19th century...




    From: Paul Saffo <NoReply_PaulSaffo@fer3.com>
    To: luabel{at}ymail.com
    Sent: Sunday, October 25, 2015 3:52 PM
    Subject: [NavList] Another crazy sextant pic

    See this link in the LA Times, the latest in all the chit-chat about the USNA "teaching" CelNav: http://www.latimes.com/nation/la-na-celestial-navigation-20151025-story.html
    Note the pic of the sextant... the scope has been screwed in backwards!




       
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