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    Re: Sextant manufacturers
    From: Henry Halboth
    Date: 2007 Oct 25, 09:02 -0700

    Hi all,
    Many thanks to those who have spent the time and
    effort compiling lists of instrument (sextant) makers
    and/or sellers - a most interesting but also daunting
    subject which could prove an endless task. I am
    certainly not an instrument collector, yet have in my
    possession two (2) which, as best as I can tell,
    appear on no list posted to date; they are ....
    Sextant by       A. Dobbie, Glasgow - aquired 1945
    Octant by        John Bliss & Co., NY - aquired 1943
    I at one time also owned a Japanese Naval Sextant of
    an alloy construction that, as a striking feature,
    sported a 7 x 50 monocular in place of a telescope, as
    well as a minute reading micrometer drum and
    associated lighting system. It was a great instrument
    for star sights and prettty accurate, but required a
    small suitcase to transport and was very unstready to
    hold in a wind or rough sea. I do not read Japanese
    and really have no idea who the maker may have been.
    --- George Huxtable  wrote:
    > Alex provided an interesting list of "sextant
    > manufacturers", but if he is
    > going to make it comprehensive, he has a lot of
    > labour in store. However, it
    > could be well worth while.
    > I think few of the English names on his list
    > actually made their own
    > instruments, though they may have bought them in to
    > put into a box and
    > attach their own name. There was a lot of
    > badge-engineering went on, even
    > then. Even just on the English list, there may be
    > many more names to add.
    > One example, not on Alex's list, is Sewill, of
    > Liverpool, who describes
    > himself on the label as "Maker to the Royal Navy".
    > Sewill "made" my own
    > Vernier sextant, which appears in all respects to be
    > a rebadged Heath clone,
    > but lacking their endless-tangent feature,
    > introduced into Heath's own
    > instruments around the same time.
    > Alex may remember that he checked out the
    > adjustments of that sextant when
    > he visited me in Oxford, in the Summer. It had
    > interested him because its
    > Kew certificate stated that the corrections were
    > zero at all angles.
    > One item on his list is-
    > | Henry Hughes and Son, formerly Kelvin and Hughes,
    > |                (Fenchurch str., London)
    > but I suggest that ought to be the other way round..
    > As far as English sextants are concerned, the
    > acknowleged authority is
    > Gloria Clifton, who maintains a database of sextant
    > makers. She is also the
    > author of a directory of London instrument-makers. I
    > have found her to be
    > very helpful.
    > Dr G.C. Clifton,
    > Head of Royal Observatory, Greenwich,
    > National Maritime Museum,
    > Greenwich, London SE10 9NF
    > Tel. 020 8312 6758
    > Fax 020 8312 6734
    > email "Gloria Clifton" 
    > =============
    > George.
    > contact George Huxtable at george---.u-net.com
    > or at +44 1865 820222 (from UK, 01865 820222)
    > or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13
    > 5HX, UK.
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