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    Re: Ebay Sextant?????????
    From: Joel Jacobs
    Date: 2004 Nov 10, 21:59 +0000
     
    Hi Alex,
     
    I agree with you. I checked some pictures of museum Kriegmarine sexatnts I have on file and the number on the index arm, and the number on the frame do not match. Interestingly, in one picture, C. Plath Hamburg is engraved below the number, and there doesn't appear to be a logo engraved on the arc. The other picture is not clear enough to make these out.
     
    I'm not certain, but I don't think it was a practice of C.. Plath to have a number on the index arm for their commerical sextants. The Russian SNO-T has a number on the index arm that will match the number on a plate on the case if its OEM stock. The SNO-T doesn't have a number on the frame. I use the term SNO-T because that is how the identifying plate is engraved.  
     
    You say you know of many sextants with a serial number on the index arm. Can you tell me which brands of sextants these are.
     
    Ok, we were not communicating in regard to lighting, You now explain the magnifier (monocular) used to read the vernier and mocrometer wheel in low light conditions has  radium paint that provides illumination. I was thinking of the more customary form of illumination from a bulb and battery..
     
    Joel Jacobs

    -------------- Original message from Alexandre Eremenko <eremenko@MATH.PURDUE.EDU>: --------------


    > Joel,
    > I have few questions/comments on your message:
    >
    > > 2. Its my opinion that the index arm
    > > is likely from a German Kreisgsmarine sextant
    > > since the serial number does not match the frame.
    >
    > I frequently see a number on the arm which does not match
    > the number on the arc. I always thought that these are some
    > two different non-related numbers. If I am wrong here,
    > then very many e-bay sextants are forgeries:-)
    >
    > > I think he (Alex) said something about missing illumination
    > > on the
    > > SNO-M. In my
    > > experience, I have never seen a SNO-T or SNO-M with illumination.
    >
    > SNO-M and SNO-T are equipped with a mag! nifying glass (microscope).
    > On my SNO-T, made in 1990, this microscope has (non-electric!)
    > illumination.
    > To see this you have to look through the microscope in a very dark room,
    > after having exposed the sextant to bright light for few minutes.
    >
    > I suppose this feature may not work on older SNO sextants.
    >
    >
    > Alex.
       
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