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--- Begin Message ---Hi Donald, An alternative name for the ring dial is the ‘poke dial’, i.e. a pocket dial. The simplest form was very common as evidenced by the fact that it is by far the most frequently reported to the Portable Antiquities Scheme (run by the British Museum) by English metal detectorists. The last time I counted, there were nearly 100 in the database. Needless to say, most are damaged or incomplete. Regards, John Davis ———- Dr J Davis BSS Editor http://sundialsoc.org.uk/publications/the-bss-bulletin/ > On 29 Sep 2024, at 07:09, Donald Christensen <dchristensen...@gmail.com> > wrote: > > Thanks for the info. Do you know where I can find the mathematical > calculations? I'd like to make one > Cheers > Donald Christensen > 0467 332 227 > > If you focus on what you lack, you'll lose what you have. If you focus on > what you have, you gain what you lack. > > >> On Sun, Sep 29, 2024 at 3:29 PM Steve Lelievre >> <steve.lelievre.can...@gmail.com> wrote: >> Hi, >> >> It sounds to me like a reference to what is sometimes called an Aquitaine >> Ring (because of a story that Elenor of Aquitaine gave one to her husband to >> be). Also known as a Farmer’s Ring. >> >> Modern ones are readily available. Just search the internet for “Aquitaine >> Ring” >> >> Steve >> >> >> >>> On Sat, 28 Sep 2024 at 20:53, Donald Christensen >>> <dchristensen...@gmail.com> wrote: >>> In the book, >>> Sundials: Their Theory and Construction Paperback – 1 June 1973 >>> by ALBERT WAUGH (Author) >>> >>> He explained a portable sundial that worked similar to a shepard’s dial. >>> Instead of a gnomon that cast a shadow on the pillar, this looked more like >>> a ring. Instead of a shadow that told the time, a beam of light showed >>> through a hole in the ring. There were groves on the inside of the ring. >>> Time was read by inspecting wherever the beam of light touched one of these >>> grooves. The ring would hang from a string. >>> >>> Does anyone have any information about this sundial? >>> >>> Cheers >>> Donald Christensen >>> 0467 332 227 >>> >>> If you focus on what you lack, you'll lose what you have. If you focus on >>> what you have, you gain what you lack. >>> --------------------------------------------------- >>> https://lists.uni-koeln.de/mailman/listinfo/sundial >>> > --------------------------------------------------- > https://lists.uni-koeln.de/mailman/listinfo/sundial >
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