There is more of a description of that dial at http://www.diduknow.info/sun/san6.html#. It is a horizontal dial of which the gnomon has been broken off. It is for use during daytime and at night. I presume the rotating plate allows adjustment for telling time by the moon, depending where the moon is in its ~30 day synodic period. -Bill
On Tue, Feb 14, 2012 at 9:25 AM, J. Tallman <jtall...@artisanindustrials.com > wrote: > Hello All,**** > > ** ** > > I came across a picture of a sundial this morning that I found to be > confusing. See the dial picture on the following web page – it has a > vertical post gnomon and the dial plate looks like it might be designed to > rotate about the center:**** > > ** ** > > http://www.diduknow.info/sun/san5.html#**** > > ** ** > > Have any of you seen this dial before and do you have any ideas how it > might work?**** > > ** ** > > ** ** > > Best,**** > > ** ** > > Jim Tallman**** > > www.artisanindustrials.com**** > > jtall...@artisanindustrials.com**** > > ** ** > > --------------------------------------------------- > https://lists.uni-koeln.de/mailman/listinfo/sundial > > >
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