This 3,2 cm flat binoculars were produced from 1928 until 1943. The binoculars contains a Moller prism. In order to use the binoculars, you have to "break" it like the "Telita". The oculars are on the outside of the body.
Hemingway on board the attack transport Dorothea L. Dix on the way to observe the assault on Omaha Beach on 6 June 1944.