Compensation Free binocular head, 30° inclined, Interpupillary 48-75mm Trinocular head (Optional) Wide Field Eyepiece WF 10×/18 Infinitive Semi-plan Achromatic Objectives 4X,10X,40X,100X Quadruple Nosepiece Double Layers Mechanical Stage 140mm×140mm/ 75mm×50mm Sliding-in condenser NA1.25 Coaxial Coarse & Fine Adjustment, Moving Range 20mm 6V/ 20W Halogen Lamp, Brightness Adjustable