AmScope A4X-YX-V460 Finite Achromatic Biological Objective Lense with 4X Magnification and 160mm Tube

This is a 4X achromatic objective lens for DIN-standard microscopes. Intended primarily for biological applications, it is designed to work with microscopes using 160mm tube-length and 45mm parfocal distance. Achromatic correction provides improved color accuracy and resolution. Compatibility Optical System Finite Mechanical Tube Length 160mm Mounting Thread RMS 20.32mm Parfocal Distance 45mm Lens Specifications Magnification 4X Numerical Aperture 0.10 Corrections Achromatic Cover-glass Thickness 0.17mm Nosecone Fixed Immersion Medium None Working Distance --> Exit Pupil -->