Bausch & Lomb 31-26-18 0.5X Stereo Zoom Microscope LensCondition:* Used, removed from service in working condition. As pictured. Additional Notes:* The 0.5x lens reduces the magnification of the microscope, providing a wider field of view* It is compatible with Bausch & Lomb StereoZoom 3, 4, and 5 microscopes* Function: Auxiliary lenses like this can be used to adjust the working distance and magnification of a stereo microscopeBausch & Lomb 31-26-18