This camera mount used in the Apollo 11 command module Columbia allowed astronauts to align the 70mm Hasselblad cameras along the x-axis of the vehicle for exterior photography work. The bottom of the t-shaped bracket inserted into one of two available sockets along the hatch frame, and has two positions available depending on the size of lens used on the camera. Typically, the astronauts would also then attach an intervalometer to allow for automatic and timed exposures for scientific studies of lunar surface such as those done while Michael Collins remained aboard the vehicle alone in lunar orbit.
NASA transferred this mount to the Museum in 1970 with other Apollo 11 hardware.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.