Item is medium format twin lens reflex camera for 6 x 6 cm exposures on 120 format film. Lens is a Zeiss Tessar f4.5, 75 mm. with a Compur shutter, 1 - 1/300 sec.. The Automat models included a film counter that used the thickness of the film roll backing to count exposed frames. The Model 1 is also known as Model RF 111A.