Model: G-206 The OPTIMA® biological microscope G-206 is a standardized optical instrument. It is equipped with achromatic objectives and wide field eyepieces. The structure of G-206 is simple, easy to operate and maintenance. The model is beautiful and dignified. G-206 is the ideal instrument for the beginner or school educational application. Features: 8. G-206 is equipped with wide field eyepieces. 9. The light source is continuously adjustable with halogen lamp. 10. The main body is made of aluminum alloy and the structure is stable. 11. By the excellent optical system, it can obtain a wide field, sharp contrast and comfortable view. Specification: 1. Model G-206 2. Observation tube Binocular head inclined at 45? 3. Interpupillary distance From 55-75mm 4. Focusing Coaxial focusing knob, coarse focusing range is 15mm and fine focusing is graduated in increment of 2.5?m 5. Stage Mechanical stage, size 120 x 125mm with moving range 35 x 75mm 6. Eyepiece WF10X/18 7. Objective Achromatic 4X, 10X, 40X (spring), 100X (spring) oil 8. Condenser N.A. 1.25 Abbe condenser with iris diaphragm and filter holder 9. Illumination 6V15W halogen lamp with adjustable light intensity 10. Power supply 110/220V switchable 11. Standard accessories Dust cover, blue and green filters, backup lamp, plano-concave mirror 12. Optional accessories WF10X/18 eyepiece with 10/100mm scale, WF15X eyepiece, 20X objective