Keywords: Metallic thermometer with 4 lead rods inside cylinder, Johann Gottfried Zimmer, Reinharz, c. 1748 - Mathematisch-Physikalischer Salon, Dresden - DSC08117.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 07 48 53 own Daderot other versions PD-old-70 cc-zero Collections of Mathematisch-Physikalischer Salon Zwinger Dresden Uploaded with UploadWizard Johann Gottfried Zimmer Measuring instruments temperature |