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    Sextant vernier scale
    From: Mike Burkes
    Date: 2004 Jan 31, 14:26 -0800
    Hi folks, I have a sextant question. I noticed in sextant photos on ebay and other publications a number of quality sextants do not have the additional tenth of a minute vernier arc making it necessary to interpolate tenths. I suppose as long as the index arm and micrometer drum are aligned this would be no obstacle. Strangely enough my Simex indices are misaligned but the sight reduction results( especially Lunars) prove correct! Any info would be appreciated!
    Yours Truly, Mike Burkes.
    ----- Original Message -----
    Sent: Saturday, January 31, 2004 1:27 PM
    Subject: Re: Buying secondhand maritime books.

    George,

    I paid US$95 for the Andrewes book.  This seemed a bit high, but I only
    found three listed on Abebooks, and this copy was the cheapest.
    Interestingly, all three listings spelled the author's last name
    differently, so I found these three by searching on the title only.  I
    have not seen the book yet (it is on the way) but I am using George's
    spelling of the author's name in deference to my experience with his
    usual precision and expertise.

    I also am a bookworm, collecting old books on navigation and other
    nautical themes. Unfortunately, I don't have the access to the second
    hand book shops that George describes, which I can imagine are nearby to
    him (having lived in Oxford myself for a number of years).  Southern
    California (Santa Barbara) where I presently reside, although providing
    beautiful sailing weather, seems somewhat deficient in reasonably priced
    used books on these topics.

    I rely primarily on Abebooks (with some 100 books stored in Wants),
    although occasionally there is a deal to be had on Ebay (but too many
    participants these days are chasing the 19th century Bowditch, Norie,
    and other well known texts).

    I have also left standing orders using Amazon.com for used books at my
    designated price and condition.  Very seldom do I get hits, though.  For
    example, I left an order for Cotter's History of Nautical Astronomy (I
    think this is the proper title -- I don't have it in front of me) for
    almost two years with no response.  I finally found a copy through
    Abebooks at Maggs Brothers in London (author's name was misspelled in
    the listing -- probably why it was still available) and picked it up in
    person on a business trip.

    My interest in these books stems from my own boating life. I own a
    classic old wooden trawler that I have been working to restore (pictures
    can be seen at www.elvica.com -- horrific pictures of the re-framing,
    re-planking, re-decking, etc. at Ventura harbour boatyard can be seen
    using the link on this site). I have scoured antique stores around the
    world on my travels to find interest items to put in my "little ship".
    For example, I have a working engine order telegraph, a WWII system of
    battle phones, a helmsman's helper, a telltale compass (installed over
    the master's bunk as usual and identical to the one on the Cutty Sark),
    an early 20th century binnacle with quadrantal balls and a Flinders tube
    (which I would love to know how to use if anyone can help) up on the
    bridge deck, a radio direction finder, taffrail logs, and many other
    items onboard(not to mention the sextants, of course).

    I have established (in cooperation with the Harbour authorities) on
    board my boat an Academy of Nautical Navigation, a non-profit
    organisation that provides navigation training and practice at no fee.
    We use the saloon of my trawler (it is quite spacious) for small group
    seminars and then go out into the channel to practice taking sights and
    working other techniques.  Of course, we also use modern tools like GPS,
    radar, and sonar as well.  I have found that there are occasionally
    visitors to Santa Barbara that want to have a little bit of an
    educational and historical nautical experience while they are here
    enjoying the natural beauty.  So my collections of nautical books come
    in quite handy!

    I hope this was of some interest.  Sorry for the length.

    Bill

    -----Original Message-----
    From: Navigation Mailing List
    [mailto:NAVIGATION-L@LISTSERV.WEBKAHUNA.COM] On Behalf Of George
    Huxtable
    Sent: Saturday, January 31, 2004 1:35 AM
    To: NAVIGATION-L@LISTSERVWEBKAHUNA.COM
    Subject: Buying secondhand maritime books. Was: How was GMT originally
    established ?

    Bill Allen wrote, referring to "The Marine Chronometer" by Rupert Gould-

    > I tried to searched Abebooks (I think I did it properly), but I
    >will try it again and periodically in the future.

    and-

    >By the way, I purchased the Andrewes book on the lunar symposium (that
    >you mentioned).  It looks fantastic -- thank you for that insight.

    This was   "The Quest for Longitude", ed, William J H Andrewes, Harvard,
    1996. I would be interested to know how much Bill had to pay for his
    copy,
    if he doesn't mind telling.

    ===============

    Buying secondhand maritime books.

    I am something of a book-freak, the problem being that there's now
    little
    free wall-space left at home, to put more bookshelves against. Books are
    bought for their content, not as a "collector" looking for increasing
    value; so I don't mind them being a bit grubby as long as they are
    intact.
    If an old book is really falling apart, it will then be cheap to buy,
    which
    might make a rebind, or retightening, worthwhile. Within reach of
    Oxford,
    there are many local bookbinders, as you might expect.

    I am a denizen of secondhand bookshops, at which you can sometimes find
    remarkable bargains in maritime books. For example, I 've found in a
    local
    shop a copy of Norie's Navigation of 1900 for £2 (about $3). This is the
    combined volume, text and tables, of over 1000 pages (they were often
    sold
    split). The interesting aspect of this edition is that the tables
    relating
    to clearing lunars had not yet been culled.

    Being a regular customer, I get catalogues posted to me from several
    maritime bookdealers in the UK. Of course, having been sorted and listed
    by
    a specialist, they are no longer cheap.

    But my book searching isn't confined to the UK, and I often find stuff
    at a
    lower price in the US or Canada, which compensates for the shipping
    cost.

    Mostly, I use www.abebooks.com to find my books, and this has worked
    well,
    so far. You search by author and title, and if lucky come up with a list
    of
    several booksellers who have it in stock. If you use "advanced search",
    you
    can specify what country or countries the seller must be in, if you
    wish,
    and specify cheapest-first in that listing. Prices are always quoted in
    $US-equivalent, but of course you have to pay in the seller's local
    currency.

    One problem is that you sometimes find that the book has already been
    sold,
    but the dealer has been slow to remove it from the abebooks
    "shop-window".

    Having found your book at a dealer, you can click on that dealer to find
    his details, and do the rest directly with him, by phone or email, which
    is
    what I always do.

    Alternatively, abebooks offers the opportunity to buy directly through
    them. In that case they will charge a 10% commission to the dealer, so
    the
    prices he lists on abebooks will have already been boosted by 10%. I
    don't
    buy that way.

    If you are buying directly from a dealer, you can use that as an
    argument
    to ask for a 10% discount on the price he has listed on abebooks, and
    will
    often succeed.

    When buying "blind" like this, I have found the book-trade to be
    generally
    honest and to describe the condition of the books on offer fairly. I
    usually pay by credit-card, but a few small US dealers ask for cash.
    They
    are usually happy to hold the book for a week or so, long enough to
    acquire
    the necessary dollar-bills and post them off. This might seem risky, but
    it
    appears to work.

    I understand that amazon books also offers a second-hand service, but
    charges dealers a 20% commission.

    It would be interesting to learn about the experiences of other maritime
    bookworms, with any hints and tips.

    George.

    ================================================================
    contact George Huxtable by email at george@huxtable.u-net.com, by phone
    at
    01865 820222 (from outside UK, +44 1865 820222), or by mail at 1 Sandy
    Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.
    ================================================================
       
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