Just in the last week I've become fascinated with sundials and decided to join 
this mailing list. This is my first post here and with that said I'd like to 
say hello to all members and ask that you forgive my noobish questions.

I saw a "digital" equatorial sundial for the first time the other day and fell 
in love with its simple design, just a band of metal bolted to a rock. I soon 
realized that its simplicity came with a cost to functionality. I've since come 
up with a far less simple design that I think solves most functionality 
problems including equation of time and the inability of use between 6 pm and 6 
am.    

You can't really tell from the model but I envision the equatorial ring being 
able to rotate 360 degrees with markers along its track for longitude and DST 
correction as well as current times for other cities around the world. One 
could also make it universal by marking it in degrees and making the base 
adjustable. If build large scale, minute lines could be added to the analemma.

I've only recently started researching sundials and the math of the analemma is 
still confusing me so I have a couple questions.  I imagine if I calculated out 
the amalemma and checked the time at noon this dial would be fairly accurate 
but how accurate would it be at dawn and dusk? Would the angels of the analemme 
change?  Also, would rotating the equatorial ring affect accuracy? If the dial 
does work and the amalemma and dial were marked in smaller increments, how 
accurate do you think it would be?

Lastly, I'm wondering if you have ever seen this style of dial before in design 
or finished form? I have yet to come across one and would love to see any 
pictures or info that's out there. Thank you so very much for any and all you 
can share with me.

Cheers,

Chris


<<finished dial (Custom).jpg>>

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