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    Lunar Distance Hs and Prism Level.
    From: Mike Burkes
    Date: 2007 Sep 18, 19:35 -0700

    Hi folks. I was wondering if anyone has any experience utilizing Hs as
    per Bruce Stark's book procedure as opposed to the regular practice of
    Hc for Lunar Distance? Maybe this topic was discussed in a previous
    thread and if so I would greatly appeciate the reference. Also I
    noticed a Prism Level was posted for sale on ebay and would like
    feedback from users. I have used it on a Davis Mark 25 sextant and
    found it to be quite the item! I surmise it just did not catch on and
    was subsequently discontinued. Does anyone know if the item was ever
    attempted to be re-marketed? Thanks so much and the posts are great!
    Mike Burkes
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