The JEM JR. is a box camera taking 2¼×3¼-inch (6x9cm) images on 120 film. It was made – mostly of sheet metal – by the J.E. Mergott co. of Newark, New Jersey, USA, c.1940.
It is (in my view) one of the most pleasingly designed of all the box cameras.
The user manual contains this little gem too:
“Wherever you go, take your camera along. The snapshot of today is the treasure of tomorrow.”