Microscope USSR OPTA UNNAT-1 was made for Soviet school teaching aids to study Natural Sciences. Maximum sizes: 12.75 x 7 x 4''. Weight is 2.6lb. The microscope is numbered (#8507). The microscope was issued in 1980s and was used in one of the Soviet schools. The microscope was made in Crimea Military Optical Plant located in Feodosia City. The plant was founded in 1967. The microscope is in very good vintage condition. Pictures are part of description; you will receive exact item you see on the pictures.