Functionality: excellent condition, not used or very little, fully operational - the lenses of the lens and the viewfinder are clean, the viewfinder's visibility is good - without distortion, the focusing work is smooth and pleasant.. Horizontal and vertical movements relative to the coordinate axes work smoothly and pleasantly. Designed for the study of transparent preparations in transmitted light in a bright field for educational and laboratory work in the field of medicine, biology, zoology, military and civilian purposes. Compared with all other microscopes, this one is improved by the AU-12 binocular attachment, the total magnification of the microscope is increased 1.5 times in comparison with all analogues. The increase in the binocular nozzle AU-12 - 1.5x Condenser Aperture - 1.2 Microscope Focusing Range: - coarse focusing mechanism, mm, not less than .... 40 - the mechanism of precise focusing, mm, not less .... 2 The maximum dead stroke of the mechanism of precise focusing, mm, no more .... 0.002 Subject Tables:   - round:     - limits of displacement during centering, mm .... 0-8     - limits of rotation, degrees. . 0-360   - rectangular with the coordinate movement of the drug:     - the movement of the drug in the longitudinal direction with the help of a single-coordinate preparation, mm .... 0-80     - moving the table in the transverse direction, mm. 0-40     - the price of dividing the nonius when moving the drug, mm 0.1 The limits of the movement of the drug with the help of the CT-12 preparation:     - in the longitudinal direction, mm ... 0–78; - in the transverse direction, mm 0-25.