With the help of Mario Arnaldi and Reinhold Kriegler I collected three important papers on the sundials of ancient Egypt. They are:
Die geschichte der Altägyptisch Zeitmessung und der uhren (The history of the ancient Egyptian time measurement and watches) by Ludwig Borchardt, 1920 - p.122- German- 30MB Ancient Egyptian Astronomy - Timekeeping and cosmography in the new kingdom by Sarah Simons, 1999 - p.230- English - 24MB Herbert Rau - Berlin instruments (sundials) of the old Egyptian (Translation of the German text into English by Reinhold Kriegler ) , 2002- p.7 -0.8MB Those interested can download the documents from : https://dl.dropboxusercontent.com/u/6616660/Borchardt%20Ludwig%20Alt%C3%A4gyptische%20Zeitmessung%20p_1_122.pdf https://dl.dropboxusercontent.com/u/6616660/Ancient%20Egyptian%20Astronomy_Sarah%20Simons.pdf https://dl.dropboxusercontent.com/u/6616660/Herbert%20Rau_Egyptian%20sundials.pdf Gianni Ferrari P.S. Does anyone know other books or writings on this subject?
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