Chain-Stereoscope ‚Revolver-Stereoskop‘

The Erne­mann revolv­ing stere­o­scopes are care­ful­ly and ele­gant­ly craft­ed instru­ments that make it pos­si­ble to view a series of 50 stereo­scop­ic images in suc­ces­sion with­out hav­ing to change the pic­tures man­u­al­ly, whether glass trans­paren­cies or paper stere­o­graphs. The instru­ments offer dou­ble adjust­ment, allow­ing the images to be set for the cor­rect stereo­scop­ic effect and viewed com­fort­ably with­out eye strain.
Fea­tures: Pol­ished Cuban mahogany with nick­el fit­tings. Revolv­ing mech­a­nism for 50 pic­tures. High-qual­i­ty achro­mat­ic lens­es. The dis­tance between the lens­es and the pic­ture is adjustable by means of a focus­ing dri­ve. Adjustable inter­pupil­lary dis­tance. Ground-glass screen for view­ing trans­paren­cies by trans­mit­ted light. Hinged lid with mir­ror for illu­mi­nat­ing paper stereographs.
(from: Hein­rich Erne­mann A.-G. Erne­mann Cam­eras. Dres­den: Hein­rich Erne­mann A.-G., 1914, p. 45. Author’s translation.)