Features: With wide field eyepieces, Long distance plan achromatic objectives the field of view is widely and clear. Coaxial coarse/fine focus system, with tensional adjustable and up stop, minimum division of fine focusing: 2μm. The mechanical stage movement mechanism can be taken out. Equipped with phase contrast unit, include long working distance condenser, phase contrast objective and centering telescope Equipped with fluorescence unit, include four group of fluorescence filter. 6V 30W halogen lamp transmission illumination with brightness control. 100W high voltage mercury lamp