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    Re: Pillar Sextant
    From: Brooke Clarke
    Date: 2003 Apr 1, 10:31 -0800

    Hi Fred:
    
    I don't see it on eBay, do you have a URL?
    
    Thanks,
    
    Brooke
    
    Fred Hebard wrote:
    
    > There is a very nice Troughton circular sextant with pillar on ebay.
    > It was just listed about 1 pm pst yesterday, and has gone from $100 to
    > $1575 with 17 bids by 9:30 am pst today.
    >
    > There are numerous pictures.
    >
    > From what I can tell looking at the vernier, the instrument appears
    > capable of measuring to 20 seconds of arc by direct reading.
    > Interpolation could lower that to 10 or 5 I suppose.  The text says 5
    > seconds.  From the text, it appears the author knows what he's talking
    > about, so I suppose 5 seconds is about right.
    >
    > Fred
    >
    >
    >
    
    
    

       
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