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    Re: Vernier reading
    From: Jim Martin
    Date: 2007 Jan 07, 14:55 -0800

    George,
              Many thanks for your reply.You are quite correct about the
    extra 30deg's on the main arc,with the index arm against the horizon
    mirror,the reading is just beyond 120deg.I will need to practice more
    readings to understand the three 12"divisions.
                       Cheers,Jim.
    
    
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