Small Prints
My late Uncle (R.A. A-A) used a similar camera in Ceylon and India and onto Rangoon via Chittagong & Mandalay. He had a mask which was inserted in the camera and the film ran over it. The old standard 120 film took 8 3 1/2" x 2 1/4" the common format (or 12 2 1/4") exposures. I think (I was only 7 or 8 when this was explained to me) with mask inserted you took 16 exposures down one side of the film. You then rewound the film rotated the mask and took another 16 exposures down the other side. This meant you had 32 pictures instead of 8 from one film. With film in very limited supply my Uncle became unit photographer and had all their allocation of film. This in itself ecked out the film supply as duplication was avoided and then with group pictures also got everyone in one picture further conservation. He spent about 2 years after the war distributing print to the rest of the unit.