NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Pillar Sextant
From: Brooke Clarke
Date: 2003 Apr 1, 10:31 -0800
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 > > >
