Motic B1-252ASC Educational Binocular Microscope Superior in design and in performance, the B1-252LED model incorporates a wide range of features designed for University and Laboratory use. Superb optical clarity and reliable mechanical engineering assures years of top performance. Technical Specifications Model B1-252LED Observation tube Binocular, sliding type Optical system Finite Optical System, 160mm Inclination 45° inclined, 360° rotating Interpupillary distance 55-75mm Diopter adjustment On both tubes , +/- 5 diopter Eyepieces Widefield 10X/18mm Nose piece Quadruple revolving nose piece with click stops Objective classification Achromatic Super Contrast Objectives 4X/0.1, 10X/0.25, 40X/0.65/S, 100X/1.25/S Stand type Upright Stage Built-in low position coaxial rackless mechanical stage with sample holder Travel range X&Y 76x40mm Condenser Focusable 1.25 N.A. Abbe Condenser, iris diaphragm and filter holder Focus mechanism Coaxial coarse and fine focusing system with tension adjustment Fine focus precision 2 μm minimum increment Upper limit stop Preset and Adjustable Transmitted illumination 3W LED illumination with intensity control Accessories included Dust cover and immersion oil In the Box Motic B1-252ASC Educational Binocular Microscope Warranty & Manuals Motic - 5 Years Warranty Catalog Product Manual