A universal optical viewfinder is a nozzle for rangefinder cameras
and is designed to determine the field of the frame when shooting with lenses with a focal length of 2.8 cm; 3.5 cm; 5 cm; 8.5 cm and 13.5 cm. for Kiev, Zorki, Fed, Leica, Contax, etc.
Manufactured at the KMZ in the USSR
In the kit: original protective plastic box