SSZ-II Stereo Zoom Trinocular body w/ 10x eyepieces. The SSZ series is the cornerstone of the Scienscope stereo zoom microscope line. The compact and durable design incorporates the Greenough optical system delivering exceptional flatness and depth of field as well as clarity and accurate color. With over 20 years of continued customer satisfaction, the SSZ has remained Scienscope's most-popular microscope. The SSZ Series can share many compatible optical components and par ts with several maj or manufacturers.