NavList:

Good Marine Sextant Coming Up

> Hi As a yachtsman new to astro nav, I acquired a Kelvin Hughes sextant
serial no 50117, it's grey ex admiralty. In the box is a fairly large dia
lens which is the one I use as well as a telescopic eyepiece with 2
changeable lenses one has a pair of parallel lines the other 2 pairs of lines
at 90 degrees. These invert the image. What are they used for. Also I have 2
shaded what appear to be replacement lenses not screwed and don't appear to
fit anywhere. Can anyone explain the purpose of these please  . Thanks Jerry
Gorman
 

Jerry if it's not a rude question, how much did you pay for your recent purchase of a KH sextant?  I heard last night that a very good friend of mine who is putting up his sextant for good is thinking of selling it.  I'm going over sometime this month to look at it and take a few photographs.  I probably won't buy it myself, because I'm happy with my present one, appart from the size of the mirrors, but we'd like it to go to an enthusiast and not end up polished and varnished on the wall of a theme pub.  The details I have so far, which I suspect might come from the certificate rather than the sextant itself are:  S Smith Kelvin Hughes 68449 6" radius 0.2' 1963, and it's a micrometer scale.  Please can anyone tell me if 68449 and 1963 corespond, or is the certificate a more recent calibration?  Dave