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    Re: Plath KS 3D
    From: Paul Brewer
    Date: 2015 Oct 11, 06:39 -0700

    Yes, I think they were but also on surface vessls I understand.

    They are spun up with an air pump rather like a bicyle pump.

    I have the operation booklet in German. Apparently they were spun up then carried up the conning tower to take a sight. All a bit hairy it sounds.

    Mine was badly damaged but I got it working enough to see that it would work, accuracy similar to the bubble version.

    Paul.

       
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