Abstract: A camera for use in a stereophotogrammetric assembly including a pair of camera assemblies, each assembly having a pair of cameras located on either side of a flash lamp assembly. Each of the cameras of the assemblies includes a flat transparent plate located in a camera housing, with the camera lens being adjustable with respect to the plate. A resilient plate-like member associated with an overcenter toggle assembly holds a film length against the glass plate for exposure. Apparatus for providing fiducial marks and a film recordation of the lens adjustment -- for stereoplotting purposes -- is provided including an internal flash mechanism in the camera housing with light piping extending to the glass plate. Film wastage is minimized by the location of the lens centerpoint (which corresponds to the fiducial marking centerpoint) off the horizontal center of the film length to be exposed.

Abstract: A camera for use in a stereophotogrammetric assembly including a pair of camera assemblies, each assembly having a pair of cameras located on either side of a flash lamp assembly. Each of the cameras of the assemblies includes a flat transparent plate located in a camera housing, with the camera lens being adjustable with respect to the plate. A resilient plate-like member associated with an overcenter toggle assembly holds a film length against the glass plate for exposure. A film magazine releasably latched to a bottom portion of the camera housing is provided for dispensing the film. Apparatus for providing fiducial marks and a film recordation of the lens adjustment -- for stereo-plotting purposes -- is provided including an internal flash mechanism in the camera housing with light piping extending to the glass plate. Film wastage is minimized by the location of the lens centerpoint (which corresponds to the fiducial marking centerpoint) off the horizontal center of the film length to be exposed.

Abstract: A coupling assembly for coupling a threaded connection of a lead screw to apparatus to be linearly reciprocated thereby. The coupling does not allow any relative movement of the apparatus and threaded connection in directions parallel to the direction of reciprocation of the apparatus, nor does it allow any twisting relative movement therebetween. However, the coupling does allow relative movement between the connection and apparatus in planes transverse to the direction of reciprocation of the apparatus, the coupling flexing in response to force components in those directions that would be large enough to cause excessive wear of the threaded connection so that excessive wear is avoided.