Biological microscope LD-LBM-A10 ✓ Optical System : Finite Optical System ✓ Viewing Head : Sliding type binocular head, inclined at 45º ✓ Eyepiece : WF10X Biological microscope LD-LBM-A11 ✓ Optical System : Finite Optical System ✓ Viewing Head : Siedentopf binocular head, inclined at 30°C, interpupillary distance range 48-75mm, eyepiece tube rotation 360º ✓ Eyepiece : WF10X/18 mm Biological microscope LD-LBM-A12 ✓ Optical System : Finite optical system ✓ Viewing Head : Siedentopf binocular head, interpupillary distance range 48-75mm, eyepiece tube rotation 360º ✓ Eyepiece : WF10X Biological microscope LD-LBM-B10 ✓ Optical System : Finite optical system ✓ Viewing Head : Siedentopf Binocular viewing head, Interpupillary distance range 48-75 mm, Inclined at 30º ✓ Eyepiece : Wide Field Eyepiece WF10X/F.N. 20 mm Biological microscope LD-LBM-B11 ✓ Optical System : Infinite optical system ✓ Viewing Head : Siedentopf Binocular viewing head, Interpupillary distance range 48-75 mm, Inclined at 30º ✓ Eyepiece : Wide Field Eyepiece WF10X/F.N. 22 mm Biological microscope LD-LBM-B12 ✓ Optical System : Infinite optical system ✓ Viewing Head : Binocular viewing head Inclined at 30º Interpupillary distance range 54-75 mm ✓ Eyepiece : High eye point wide field eyepiece PL10X/20 mm with ±5 degrees diopter control Biological microscope LD-LBM-B20 ✓ Optical system: Infinite optical system ✓ Viewing head: Compensation free, trinocular 30° inclined 360° rotation viewing head, interpupillary distance 48 to 75 mm ✓ Eyepiece: Diopter adjustable eyepiece WF10X/22 mm Biological microscope LD-LBM-C10 ✓ Optical System : Infinite Optical System ✓ Viewing Head : Siedentopf binocular head, inclined at 30º, interpupillary distance range 50-75 mm, eyepiece tube rotation 360º ✓ Eyepiece : WF10X/20 mm (high eye point) Biological microscope LD-LBM-C11 ✓ Optical System : Infinite Optical System ✓ Viewing Head : Siedentopf binocular head, inclined at 30º, interpupillary distance range 50-75 mm, eyepiece tube rotation 360º ✓ Eyepiece : WF10X/20 mm (high eye point) Biological Microscope LD-LBM-C20 ✓ Optical System : Infinity Optical System F=200mm ✓ Viewing Head : Trinocular Tube, 30°inclined, Interpupillary distance 52 to 75 mm, trinocular light is split 50/50 by a high quality prism (20/80 is optional) ✓ Eyepiece : WF10X/20mm with the high point Biological Microscope LD-LBM-D10 ✓ Optical System : Finite Optical System ✓ Viewing Head : Binocular viewing head, 30° inclined, 360° rotation, interpupillary distance 48 to 75 mm ✓ Magnification : 40X to 1600X Biological Microscope LD-LBM-D11 ✓ Optical System : Finite Optical System ✓ Viewing Head : Binocular viewing head, 30° inclined, 360° rotation, interpupillary distance 48 to 75 mm ✓ Magnification : 40X to 1600X Biological Microscope LD-LBM-D12 ✓ Optical System : Finite Optical System ✓ Viewing Head : Trinocular viewing head, 30° inclined, 360° rotation, interpupillary distance 48 to 75 mm ✓ Magnification : 40X to 1600X Biological Microscope LD-LBM-D13 ✓ Optical System : Finite Optical System ✓ Viewing Head : Trinocular viewing head, 30° inclined, 360° rotation, interpupillary distance 48 to 75 mm ✓ Magnification : 40X to 1600X Biological Microscope LD-LBM-D14 ✓ Optical System : Finite Optical System ✓ Viewing Head : Monocular viewing head, 45° inclined, 360° rotation ✓ Magnification : 40X to 1600X Biological Microscope LD-LBM-E10 ✓ Principle of Optics : Differential Interference Contrast Microscope ✓ Viewing head : Compensation Free Trinocular Head inclined at 30° ✓ Nosepiece : Ball Beating Quadruple Nosepiece Biological Microscope LD-LBM-E11 ✓ Optical system : Infinite optical system ✓ Viewing head : Compensation free binocular viewing head, 30° inclined, interpupillary distance 48 to 75 mm ✓ Eyepiece : Wide field Eyepiece WF 10 X/ 20 mm Biological Microscope LD-LBM-E20 ✓ Optical system : Color corrected infinity optical system ✓ Viewing head : Gemel trinocular head, 30° inclined,  Inverted Image, Interpupillary Distance 50 to 76 mm, Three Split Ratio 0:100, 20:80, 100:0 ✓ Eyepiece : High-Eye point Plan Eyepiece PL10X/25 mm, Diopter Adjustable