Eyepieces Wide field eyepieces WF 10x/18 mm Observation tube Binocular 45° inclined tubes, 360° rotation Nosepiece Nosepiece for 4 objectives. Ball-bearing mechanism and click-stops Objectives Achromatic 4x N.A. 0.10, 10x N.A. 0.25, S40x N.A. 0.65 and S100x N.A. 0.85 oil immersion 35 mm parafocal objectives. The S40x and S100x objectives are spring-mounted Stages Square stage 115 x 100 mm with 30 x 70 mm X-Y translation stage Focus control Coaxial coarse- and fine adjustment knobs on both sides with 0.002 mm graduations. Friction of focus control can be adjusted Condenser Abbe N.A. 1.25 condenser with iris diaphragm and filter holder Illumination LED 1 Watt illumination with intensity control, rechargeable batteries with external power supply/charger Packaging Complete with manual and dustcover in styrofoam case