Olympus GSWH 10X Stereo Microscope Eyepiece

The Olympus GSWH 10x eyepiece is the standard widefield eyepiece for the Olympus SZ series stereo microscopes, providing 10x magnification with a field number of 22 for comfortable, wide-field binocular observation. In stereo microscopy, the eyepiece magnification multiplies with the zoom body magnification to produce the total magnification — a 10x eyepiece on an SZ body with a 4x zoom setting yields 40x total magnification, for example. The GSWH designation indicates a widefield design optimized for the SZ series optical path, delivering flat, sharp images across the full field of view with good eye relief for extended observation sessions. The 30mm barrel diameter fits directly into the eyetubes of the Olympus SZ30, SZ40, SZ60, and SZ1145 stereo microscope heads. As a genuine Olympus OEM eyepiece (part no. 2-S400) manufactured in Japan and supplied in excellent condition with flawless optics, it is a reliable replacement or spare for any of these platforms.