299,733. Savage, L. F. April 30, 1927. Stereoscope systems stereoscopic kinemato graphy. - Stereoscopi cally related images are photographed in superposed position on the same film by means of an optical combination consisting of two objectives c having lenses b situated in their focal planes. The images of a distant object are formed in these intermediate lenses b, which are also in the focal planes of lenses c, the function of the latter being to render the rays from the images parallel on emergence and before entering the large lens d, by which superposed images are formed on the plate or film. Focusing of the objectives a is effected by the milled head k and the distance between the centres of the objectives is adjusted by the conical ended screw h against the action of springs g.