The dis­tinc­tive fea­ture of this stere­o­scope is that the tray, which holds 25 glass stere­oviews, remains fixed in posi­tion while the images are viewed. A turn­ing knob is locat­ed on the side. By rotat­ing this knob clock­wise or anti­clock­wise, an image is select­ed. In doing …

Le Stéréo­drome is a robust stere­o­scope with a heavy-duty and reli­able con­struc­tion. The device exhibits a sta­ble design that remained in pro­duc­tion into the 1930s with­out sig­nif­i­cant mod­i­fi­ca­tions. The mod­el designed to accom­mo­date a pro­jec­tion lamp has a few vis­i­ble dif­fer­ences on the out­side and …

The wood­en trays con­tain 25 slides each and can be insert­ed into the view­er by flip­ping back its top. Then, by turn­ing a crank on the right side of the hous­ing, one slide after anoth­er can be exam­ined. Each half-turn of the crank advances or …

A bake­lite tray con­tain­ing 25 glass slides can be insert­ed by flip­ping down the front of the view­er. Then, by turn­ing a crank on the right side of the hous­ing, one slide after anoth­er can be exam­ined. On the left side of the view­er, there …

A wood­en tray con­tain­ing 20 glass slides can be insert­ed by flip­ping down the front of the view­er, then, by mov­ing a knob, locat­ed on the right side, up and down, one slide after anoth­er can be exam­ined. The slides are pulled up by mag­nets …

A bake­lite tray con­tain­ing 25 glass slides can be insert­ed by flip­ping down the front of the view­er. Then, by depress­ing the lever on the right side of the hous­ing, one slide after anoth­er can be exam­ined. On the left side of the view­er, there …