... the most comfortable view position. Advanced Infinity MicroscopeModel: YK-BL158This Advanced Infinity Microscope has anadjustable angle head so ... point 10X eyepieces 22mmInterpupillary distance adjustment from 55-75mmPlan Infinity objectives: 4X, 10X, 40XR, 100XR OilDouble layer ... (Special Order):12V / 100W illumination20X or 60X PLAN infinity objectivesSix place nosepiece with six objectives 4X, 10X, ...