 Optikotechna was then forced to immediately cease consumer goods production in order to supply military optical equipment for the German army.From 1939 until the end of the war, the company produced nothing other than military optical equipment that included rangefinders, periscopes, binoculars and riflescopes.After 1935, Meopta optika became a subsidiary of Zbrojovka Brno and a major supplier of military optics for the Czechoslovak Army.