Composite sphere by Ehrenfried Walther von Tschirnhaus, c. 1700, divid...
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.
Cryptological dividers for encoding a letter as a line segment length,...
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.
Crystal ball - Mathematisch-Physikalischer Salon, Dresden - DSC07969
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.
Encryption device, probably German, before 1587, severely damaged in 1...
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.
Geometric square, Christoph Schissler, Augsburg, 1569, severely damage...
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.
Graphometer, Louis Chapotot, Paris, c. 1680 - Mathematisch-Physikalisc...
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.
Gunner's quadrant, Paul Puchner, Christoph Trechsler the Elder, Dresde...
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.
Metallic thermometer with 4 lead rods inside cylinder, Johann Gottfrie...
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.
Nocturnal, Erasmus Habermel, Prague, c. 1600, tell time at night by si...
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.
Sector with dividers, probably Dresden, c. 1630 - Mathematisch-Physika...
Brass sector with dividers, probably made in Dresden circa 1630, exhibited in the Mathematisch-Physikalischer Salon (Zwinger), Dresden, Germany. Four scales are visible on this sector; from inside to outside t... More
Sectors by (top) I. David, Dresden, mid 1600s, (middle) J. G. Arndt, p...
Three brass sectors from the 1600s, exhibited in the Mathematisch-Physikalischer Salon (Zwinger), Dresden, Germany. The top one was made by I. David in Dresden in the mid 1600s; the middle one by J. G. Arndt c... More