RBT - Raumbildtechnik GmbH, Aichwald, Germany. Reflex stereo camera for 35mm film format 24 x 33 mm, 108 Yashica combination of two cameras, lenses: Carl Zeiss Distagon 2.8 / 35 mm, shutter. B, 1-1 / 2000 sec, automatic control exposure adjustment distance 0.8 m to infinity, motorized advancement of the film. Only 150 units were built. - Literature: Werner Weiser," Stereo Cameras Using Film" , p. 94. - The electronic functions tested, they work.