The Stereo Graphic is a 35mm stereo camera that was made by Graflex from 1955-1960. It makes pairs of 24 x 23 mm pictures at each exposure. Viewing these images in a 3-D slide viewer creates a realistic 3D image. The camera has a fixed focus. The lenses are a pair of Graflex Graflar 35mm f/4. The camera is fixed-focus and the shutter has only time and instant (1/50) positions which makes it a quite basic camera. F-Stops marked Brilliant 11 and f/16.