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Here’s my list for the 1950s and after:

56687 micrometer 1950 9/8/50 stadimeter
57097 micrometer 1948 12/31/48
59636 micrometer 1953 2/4/53
60641 micrometer 1952
61349 micrometer 1954 7/23/54, two telescopes
62439 micrometer 1954 9/29/54, scruffy
67414 micrometer 1962
67922 micrometer 1965 6/5/65, mate aluminum?, no light
69236 micrometer 1979 9/7/79 3 circle, 2.5x telescope, small mirrors
70019 micrometer 1966 mate grey, no light
70982 micrometer 1968 8/2/68

The two sextants with serial numbers greater than 70000 are dated 
appropriately for your firend’s to be a 1963 model.  My guess is that the 
certificate accompanying your friend’s sextant is the original.  The 67922 
and the 69236 sextants would seem to date your friend’s after 1965, but the 
67922 was a very strange one, with no light and apparently made of aluminum.  
I also may have transcribed its serial number incorrectly. 

 
Fred Hebard
mbiew@comcast.net



> On Jan 7, 2015, at 11:46 AM, David Pike  wrote:
> 
> 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 
> 
> 
> 

   

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