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    MS-733,Simex,Astra IIIB + sextant calibration
    From: Doug Royer
    Date: 2004 Feb 2, 11:37 -0800

    Joel,
    Wow,working for the Tamaya Group!That must have been a great experiance.
    I looked in the archives also and came up dry.I know I posted the info but
    can't remember under what title.So,I'll give you a quick rundown of  the
    sextant.I ordered and paid for the 733 in 1983 while in Japan.I picked it up
    while in Japan in 1984.The polarizing filters you wrote about that one
    places on the scopes are the type that I got with mine.I got one for each
    scope.I ordered the standard sextant,sight tube,3x scope,shades and mirrors
    and opted for a 6x scope to be supplied by a Japanese optics firm and fitted
    for the 733.I have to check the paperwork to get the name of the optics
    company as I can't remember it.I do know the firm makes high end astromomic
    telescopes for the Japanese market.The 6x scope has a very fine internal
    cross hair.The optics are 1st quality.The Germans don't have a corner on the
    optics market by any means.The Index error is a constant 0.1 off the arc.It
    hasn't changed in many years under many differant weather conditions.
    I've seen and used a few of the Simex sextants.Good quality instruments
    also.Do you know the history of these?Mike Burkes,a fellow listmember,has
    one and we were talking of and cxomparing them to the Tamayas in the past.
    I remember reading(maybe on Ebay)of the sale of the Tamaya or one like it to
    a retired naval officer.Was that you?
    The Astra IIIB is an excellant sextant.Especially for the price.I don't know
    what you mean by "navy types" in your last post.The men were in uniform so
    they were navy.The sextants were purchaced off the shelf and were the Deluxe
    model IIIB.They had the whole horizon mirror not the split mirror.I think
    the differance between the Standard and Deluxe IIIBs are the size of the
    Index Mirror.I may be wrong.
    Fred,I made inquires in the past and posted my findings to the list about
    calibrateing sextants and was told by more than one person in the industry
    no one in the states renders that service anymore.Mr. Luykes may have but he
    passed away last year.
    
    
    

       
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