FIELD: optics. SUBSTANCE: device includes left and right ocular lenses and holder section for attachment of slides in the form of flute to load rectangular unit for attachment of slides or unit for attachment of stereo slides with left and right ends of arc-shaped form. Distance between left and right internal walls in lower part of holder section corresponds to minimal horizontal length of arc-shaped unit for attachment of stereo slides that is equal to horizontal length of rectangular unit. In compliance with first variant left and right internal walls of holder section are made beveled so that distance between them narrows towards loading. According to second variant left and right internal walls of holder section are either parallel or beveled within limits of preset length in direction of loading and narrow additionally towards loading from specified section of preset length. In agreement with third variant left and right internal walls of holder section are made bent protruding inwards within section of preset length towards loading and narrow from section of preset length. EFFECT: possibility of installation of both rectangular unit for attachment of stereo slides and unit for attachment of stereo slides having left and right ends of arc-shaped form in one and same holder section without use of adapter. 3 cl, 13 dwg
