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    Re: Micrometer vernier
    From: Peter Monta
    Date: 2018 Apr 18, 15:07 -0700
    Coincidentally, I'm refurbishing a Navy Mark 2 for a family member.  Attached is a photo of the vernier and the index arm showing the manufacturer and date for this Mark 2 variant.

    I'd like to mention how valuable Bill Morris's book has been for this refurbishing work (my first).  He details some quirks of the Mark 2's construction and adjustment---very helpful to avoid confusion.  Also, I have a partial SNO-T I've been fooling around with, and Bill also has a booklet on that model specifically.  It's the booklet that "should have come with the sextant", as they say.  Thanks Bill!

    My aim with the SNO-T is to make the missing parts.  I have the frame and index arm.  All that's missing is the the tangent-screw assembly, the index-mirror cell, the horizon-mirror cell, the telescope rising piece, the telescope, and the shades.  No problem!

    Cheers,
    Peter

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