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Vintage Proto Curved Ratcheting 12pt Box End Wrench

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    Posted 6 months ago

    dpauld
    (32 items)

    Found this odd curved Proto “Socket” Wrench. Info stamped on it:

    F-1541006(or G?)
    5/8
    Proto Mfg USA
    SAE 50558

    Can’t find anything else like it - possibly custom tool made for a specific purpose? I contacted Proto and they didn’t have any information on it, either. They only said it was called a “curved ratcheting wrench”.

    Anyone else ever seen one like this?

    Unsolved Mystery

    Help us close this case. Add your knowledge below.

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    Comments

    1. dav2no1 dav2no1, 6 months ago
      Look like wrenches used to tighten valves on aircraft?

      https://www.ebay.com/itm/334068078573

      Check Alloy artifacts site..

      http://alloy-artifacts.org/cgi-bin/index_query.cgi?query=Proto

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