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U- Boat Binocular Restoration

Article about: U-Boat Zeiss 7x50 BLC Fixed Focus Binoculars in poor state of repair. Can't be having that... so a restoration has begun. With no rubber caps top or bottom, and with fungus spores and foggy

  1. #1

    Default U- Boat Binocular Restoration

    U-Boat Zeiss 7x50 BLC Fixed Focus Binoculars in a very poor state of repair.

    Because I love these binoculars, they needed a helping hand so a restoration has begun.



    With no rubber caps top or bottom, and with fungus spores and foggy lenses, these binoculars need help.

    Also, they have become very stiff with dirt or ageing lubricant.

    So, a full clean up is needed with new rubber parts to be added.

    These weigh in at around 1.8 kg, quite heavy.

    In good clean condition, these go for any thing between 600 to 1200, depending on condition.

    Fungus spores have been found, third picture, the large white spec.

    These must be burnt out in a oven, because they will regrow again, it's very hard to remove once they have taken root

    Pictures of the strip down of parts that need cleaning/servicing.

    Also, the lenses are "Foggy" or "Cloudy" and need treatment...
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  3. #2

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    All parts are now cleaned and fully serviced and put back together again.

    New Rubber parts acquired and added to the glasses.

    The top of the glasses require six Rubber pieces alone, three pieces to each side.

    Before and after...

    See how they look with (bottom) and without (top) their Rubbers..

    U-Boat blc 7x50 now back in business
    Click to enlarge the picture Click to enlarge the picture Click image for larger version. 

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    Last edited by The Devil's Bank; 10-01-2016 at 06:24 PM.

  4. #3

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    Most of the original protective rubbers are either split or falling apart with age etc.. and that's if they still have them on

    Occasionally, one rubber might turn up, but I've never ever, seen a complete original set come up for sale.

    So, adding new replacements, stops them from being bashed about or dropped, with out doing any damage to the lenses.

    Some people don't want any work done to them as they lose the "original" tag.. (?)

    A bit silly really, as this pair is absolutely useless as binoculars in this state.

    But, with the sea salt and damp getting into the insides, the fungus spores will grow and destroy these highly regarded binoculars.

    Also the lubricants inside, dry up, and this leads to even more problems

  5. #4

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    Once the fungus is settled and taken root, it is job and a half to kill the spores, you have to burn them out

    I would rather have a clean and working original U-Boat blc Binocular, rather than a untouched non working useless piece of metal

    Binoculars are meant to be used and I use mine, looking for U-Boats on the Mersey

    I often take one pair out with me, to have a lovely view of the Mersey, and the clean optics are now in superb condition.

    I had three pair of these binoculars, and sadly this pair was a recent sale, to a avid bird watcher (??) don't ask..

    I have two more now, a very rare prototype, that was even in worse condition than the pair shown.

    Plus a rare fully Red tinted lense type.

  6. #5

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    Wow, great job. Well done.

  7. #6
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    Great post! Rich A. in Pa.
    1969 Shelby GT-500 King of the Road
    Knowledge is power, guard it well.

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