FEATURES： - Fully coated optical system. Mechanical length 160mm. - DIN45mm achromatic objectives, parfocal. - Focus by well-made rack & pinion, accurate & smooth, with built-in slip clutch and tension adjustment. Safety rack stop prevents damage to slides & objectives. - Disc and iris diaphragms for your option. NA0.65 condenser & spiral type Abbe NA1.25 condenser for your choice. - Well-painted metal base & stand, chemical resistant - The built-in electrics are CE approved. Eyepiece: WF10X Objective (Achromatic): 4X、10X、40X (s) Stage: Plain Stage with Slide Clips Nosepiece: Triple Focusing: Coaxial Coarse Condenser: Single Lens with Disc Diaphram Illumination: Incandescent Lamp 220V/20W or 110V/20W