Total Magnification : 40x-1000x Optical System : Infinite Optical System Viewing Head : Compensation Free Trinocular Head, Inclined at 30°, 360° Rotatable, Interpupilary Distance 48-75mm Eye piece : Extra Wide Field Eyepiece EW10×/ 22mm (6PSC) Nosepiece : Inverse Quintuple Nosepiece Objective : Infinity Plan Achromatic Objective 4×?10×?40×?100× Condenser : Swing Condenser N.A.0.9/ 0.25 Focusing : Coaxial Coarse & Fine Focus Adjustment, Fine Division 0.001mm Stage : Double Layers Mechanical Stage 185×142mm, Moving Range 75×55mm Kohler Illumination : External Illumination, Halogen Lamp 24V/ 100W Pointer : Green LED Pointer , Brightness Adjustable Dual Color Pointer , Brightness Adjustable (OPTIONAL) Optional : Inverse Sextuple Nosepiece Upgradable to 100W HBO Ultra High Voltage Spherical Mercury Lamp /LED Fluorscence Attachement with 6 Cube filters Phase Contrast Kit Dark Field Condenser NA 0.9 Dry Dark Field Condenser NA 1.25-1.36 Oil Imaging system Image analysis software