The stere­o­scope is acti­vat­ed by coin inser­tion. The mech­a­nism is locked by default and is unlocked by insert­ing a coin through the top. The slides can then be viewed sequen­tial­ly by rotat­ing the knob on the right side. One slide hold­er includes an exten­sion; after …

Alexan­der Beck­ers was a Ger­man born daguerreo­typ­ist and inven­tor and man­u­fac­tur­er of stere­o­scopes. He designed a mul­ti­view stere­o­scope based on a rotat­ing belt mech­a­nism. This design served as a mod­el for the chain-based stere­o­scope, a type that would con­tin­ue to be man­u­fac­tured until the 1930s. The …

Georg Fal­tus was a man­u­fac­tur­er of pho­to­graph­ic instru­ments in Vien­na. His com­pa­ny was prob­a­bly estab­lished at the begin­ning of the 20th cen­tu­ry. A 1938 Vien­na trade direc­to­ry lists him as Georg Fal­tus, Spezial­w­erk­stätte für pho­tographis­che Appa­rate und Geräte. Fal­tus man­f­u­fac­tured cam­eras and stere­o­scopes. (from: Com­pendi­um …

Le Stéréo is par­tic­u­lar­ly notable for the dis­tinc­tive han­dle mount­ed on the top of the body. Some vari­ants bear a Le Stéréo logo on the front. The view­er is asso­ci­at­ed with the Paris pho­to­graph­ic stu­dio Étab­lisse­ments Rep, which was active in the 1920s and locat­ed …

This Amer­i­can inter­change­able-chain, short-focus stere­o­scope has a dis­tinc­tive con­struc­tion, par­tic­u­lar­ly in its chain mech­a­nism. Unlike ear­li­er mod­els that used wire chains, it employs stamped and cut met­al frames that form a per­fect bor­der around the pho­to­graph­ic image. Since these frames are the same dimen­sions as …

Fur­ther read­ing: Stere­oscopy His­to­ry Series — Mat­tey (A. Ruiter)