Eumig 651 Parallax Compensator for Eumig C3M 8mm Cine Camera, in leather case. Manufactured by Eumig, Austria, 1960-65
EUMIG was an Austrian company producing audio and video equipment that existed from 1919 until 1982. The name is an acronym for Elektrizitäts und Metallwaren Industrie Gesellschaft, or, the "Electricity and Metalware Industry Company."