Keywords: Diptych sundial, Charles Bloud, Dieppe, after 1650, ivory - Mathematisch-Physikalischer Salon, Dresden - DSC07936.JPG en Exhibit in the Mathematisch-Physikalischer Salon Zwinger Dresden Germany This artwork is old enough so that it is in the public domain Photography was permitted in the museum without restriction 2013-12-08 06 53 16 own Daderot other versions PD-old-70 cc-zero Sundials in Mathematisch-Physikalischer Salon Zwinger Dresden Uploaded with UploadWizard Charles Bloud Folding sundials |