Hi Dan, As you consider conical gnomons, pay attention to the conical sundials of Hendrik Hollander, the winner of the 2006 Sawyer Award. His conical bi-gnomon sundials could tell clock time. Here is the note on his award.
"The 2006 Sawyer Dialing Prize has been awarded to Hendrik Hollander for his innovative design of a mean-time planar sundial with oblique conical gnomon and modified hour lines and day curves – resulting in a sundial adapted to modern timekeeping while retaining the aesthetic appeal of the familiar dial face." Google his name and sundials to see what his conical sundials can do. A link to this article published in the NASS Compendium 13-3 will come up. Also check the digital bonus with NASS Compendium 14-2 "Hollander Dial Software". Regards, Roger Bailey NASS Secretary From: Dan Uza Sent: Saturday, August 15, 2015 11:16 AM To: sundial@uni-koeln.de Subject: Metal cone Hello all ! Any idea how much a metal cone would cost and where to buy it online? The kind you can use as gnomon - Ebay has loads of punk spikes on offer, but they are too small. Thanks! Dan Uza -------------------------------------------------------------------------------- --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial -------------------------------------------------------------------------------- No virus found in this message. Checked by AVG - www.avg.com Version: 2015.0.6086 / Virus Database: 4392/10442 - Release Date: 08/15/15
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