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    Re: C. Plath optical instrument
    From: Luc Van den Borre
    Date: 2018 Jun 8, 09:11 +0200

    It's an azimuth. Search for 'C. Plath azimuth' and you'll find a bunch
    of different models. Attached picture (from
    https://www.emedals.com/u-boat-azimuth-c-plath-hamburg-g4053 ) shows
    bottom of a similar device.
    Fits on top of a compass. The round mirror is for star sights, black
    glass on the other side for sun shots. Optics show compass bearing and
    sight in one image.
    On 08/06/2018 07:01, Sean C wrote:
    > My first thought was that some of the parts resemble my U.S. Army
    > lensatic compass, which is used for taking magnetic bearings to objects.
    > After some searching, I found a few listings for a "U.S. Navy Bearing
    > Bar" (whatever that is) which looks somewhat similar in design. So, My
    > guess is that it is some device which fits on/over a ship's compass to
    > aid in taking bearings.


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