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    Re: Dennert & Pape MHR-1 HR-2 Cylindrical Slide Line Ruler
    From: Max U
    Date: 2007 Jul 26, 09:41 -0700

    Thanks for the reply and the links..
    The ARG-1 at Toronto Surplus is the Luftwaffe version.  The price is
    Astronomical too.  They were asking (wait for it) $8K, but then
    apparently reduced it to $5.5K(ish).  Way way too much money in my
    opinion.  The Luftwaffe versions are not that particularly rare.  I
    heard that this one may have come from a museum collection, which help
    influence the high price.
    Looking through the eyepiece you can see the numbered grid.  This is
    what I have read about the
    The ARG-1 contains a stereographic projection of the sphere engraved
    on glass, which is viewed through a microscope for sight reduction.
    It has has a bakelite body with a rheostat and base mounted
    illumination module.  The circular glass screen has a highly accurate
    mercator projection engraved to the underside and a silk illumination
    cover.  It has an azimuth and microscope eyepiece with adjustable
    cross hairs.
    Best wishes
    On Jul 26, 3:29 pm, dw  wrote:
    > Those with the ION CD may have an article by Mary R. Hunt from 1947 on
    > the german gyro-sextant from Max's collection.  Can anyone summarize?
    > Thx.
    > http://americanhistory.si.edu/collections/navigation/object.cfm?recor...
    > for more photo's
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