Keywords: Equinoctial sundial, Salomon Krigner, perhaps Warsaw, c. 1700 - Mathematisch-Physikalischer Salon, Dresden - DSC07931.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 52 08 own Daderot other versions PD-old-70 cc-zero Sundials in Mathematisch-Physikalischer Salon Zwinger Dresden Uploaded with UploadWizard Salomon Krigner Equatorial sundials Portable sundials |