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--- Begin Message ---Only on flat planes, not inside scaphes........ J Dr J Davis Flowton Dials http://www.flowton-dials.co.uk/ BSS Editor http://sundialsoc.org.uk/publications/the-bss-bulletin/ > On 10 Aug 2018, at 22:38, Michael Ossipoff <[email protected]> wrote: > > Sara and John-- > > But it's said that the hour-lines for Babylonian, Italian, and co-Italian > hours are straight lines, as they are on all the other dials that I've seen > that have Babylonian &/or Italian hours. > > Michael Ossipoff > >> On Fri, Aug 10, 2018 at 4:37 PM, Schechner, Sara <[email protected]> >> wrote: >> I am camping at Stellafane with little connection, so will keep this brief >> until I return to civilization! >> >> The gnomon is adjustable for different latitudes. The choice determines the >> correct horizontal scale to use around the compass. The 2 pin gnomon scaphe >> sundial are for finding Italian and Babylonian (or Nuremberg hours). The >> instrument with the spinning pointer is a wind vane. >> The instrument is made in Nuremberg in the early 17th century. >> >> Sara >> >> Sent from my iPhone >> >> On Aug 10, 2018, at 12:48 PM, Michael Ossipoff <[email protected]> >> wrote: >> >>> Yes, the Boy Scouts of America at least used to sell a Compass-Oriented >>> Dyptich dial with several concentric rings, each having different >>> hour-lines, and with its string-gnomon adjustable for latitude, with >>> several attachment-points on the vertical surface. I think it accommodated >>> 3 latitudes. The hour-line rings were rectangular, it seems to me. >>> >>> Someone at this forum designed a universal Horizontal-Dial whose hour lines >>> were curved lines originating from the gnomon-string's base-attrachment, >>> with latitude-labeled concentric circles telling where to read the hour >>> lines for the various latitudes. ...and of course with the string-gnomon >>> slidable in a vertical slot in the vertical surface. >>> >>> Michael Ossipoff >>> >>> >>> >>>> On Fri, Aug 10, 2018 at 4:22 AM, Dan-George Uza <[email protected]> >>>> wrote: >>>> Dear all, >>>> >>>> I've recently found this piece in a museum near me and I need your help in >>>> dating it. >>>> >>>> Why are the hour marks offset? I suspect a correction for latitude. And >>>> what do the two small circular dials on the bottom measure? >>>> >>>> Also what would be the purpose of the circular shape containing the >>>> alidade? I suspect it has something to do with the winds. >>>> >>>> Any info will be highly appreciated. >>>> >>>> Thank you, >>>> >>>> Dan Uza >>>> >>>> >>>> >>>> >>>> --------------------------------------------------- >>>> https://lists.uni-koeln.de/mailman/listinfo/sundial >>>> >>>> >>> >>> --------------------------------------------------- >>> https://lists.uni-koeln.de/mailman/listinfo/sundial >>> > > --------------------------------------------------- > https://lists.uni-koeln.de/mailman/listinfo/sundial >
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