The Stereo-Dioskop is a com­pact binoc­u­lar-style stere­o­scope. The view­er was a com­mer­cial suc­cess and was also dis­trib­uted by oth­er Ger­man cam­era man­u­fac­tur­ers includ­ing ICA, Con­tes­sa-Net­­tel, and Franke & Hei­decke. (from: Com­pendi­um of Stereoscopes)

The Stereo-Dioskop is a com­pact binoc­u­lar-style stere­o­scope. The view­er was a com­mer­cial suc­cess and was also dis­trib­uted by oth­er Ger­man cam­era man­u­fac­tur­ers includ­ing ICA, Con­tes­sa-Net­­tel, and Franke & Hei­decke. (from: Com­pendi­um of Stereoscopes)

Emil Busch took over the opti­cal firm in Rathenow from his uncle Eduard Dunck­er in 1845. The com­pa­ny began pro­duc­ing pho­to­graph­ic devices from 1852 and became known for high-qual­i­­ty instru­ments and optics. In 1865, it intro­duced its new­ly devel­oped wide-angle lens, the Pan­to­scop. From 1872, …

The Achro­mat­ic Mir­ror Stere­o­scope was spe­cial­ly designed for view­ing paper stere­oviews that were mount­ed in a book. It is an open view­er with a mir­ror on the base of the device, to which it owes its name. Two achro­mat­ic lens­es are placed in adjustable brass …

Le Stéréo­scope à doucine is a deluxe stere­o­scope for large-for­­mat stere­oviews. The view­er was avail­able with lens­es of 33 mm, 40 mm, or 48 mm diam­e­ter. (from: Com­pendi­um of Stereoscopes)