Ken-A-Vision T-29043 Research Microscope, 10&times; Eyepiece, Trinocular Head and Plan Objectives Research microscope provides high magnification for biological use and educational (advanced high school, college, and university), research, and clinical applications Trinocular head with adjustable Seidentopf binocular head monocular objective for second viewer or camera attachment (not included) Choice of DIN achromatic, Infinity achromatic, semi-plan, or plan lens objectives Gimbaled N.A. 1.25 Abbe Condenser for high-quality bright 20W (12V) halogen Kohler illumination to provide uniformity of light when taking photomicrographs Mechanical stage provides left-to-right movement and includes specimen holder