Two On A Big Ocean The Story of the First Circumnavigation
of the Pacific Basin
in a Small Sailing Ship

      

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Hal Roth
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Re: Pillar Sextant

Subject: Re: Pillar Sextant
From: Brooke Clarke (brooke@XXX.XXX)
Date: Tue Apr 01 2003 - 13:31:14 EST

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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