Axvier's reply covers the question pretty well , its always a point of interest with me to make a mantal note of size and type of binocular seen around the neck of soldiers of all ranks seen in film footage or in photos.
Make and size often hard to get right as leitz and Zeiss dienstglas models look pretty much alike.
The rarer models do ocasionally turn up ....Manteuffel (hope I spelt that right !) with what looked like a leitz naval set around his neck to Himmler with a 7 x 56 civilian set (centre focusing) to a 6 x 30 set when marching in "Triumph of the Will".
Occasioanlly modern movies are worth a look ...e.g. the Waffen S.S> officer who led the assult on Arnhem Bridge with a CF41 set by BArr and Stroud around his neck !
Its always a pity to see the reticule /granicule removed.
If anyone has sets for sale I am always interested !