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    Re: Was this optical instrument designed for celestial navigation?
    From: John Morris
    Date: 2016 Feb 3, 17:24 -0800

    Thanks, yes, always used height of eye correction but long ago forgot the term "dip" if I even retained it past the classroom door.  If the prof said we wouldn't be tested on it, zap! to the recycle bin it went.  We were given a plastic-laminated height of eye correction table that stayed in the navigation kit forever and I'm sure I still have it somewhere at home.

    I'd still like to know exactly what German word the device's abbreviation stands for, Ktm. = K--------tauschenmesser, tauschen = dip and messer = meter.  So what's the K?

       
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