• Total Magnification of 21X to 135X at 3.3in (84mm) working distance, Max 180X with 20X eyepieces.
• Click stop zoom adjustments for accurate, repeatable measurement.
• Standard High Eye Point wide field 15x eyepieces at 45 degrees for comfortable viewing even for operators with eyeglasses.
• Diopter adjustment on both eyepiece tubes.
• Adjustable Interpupillary Distance of 1.96in (50mm) to 2.91in (74MM) accommodates any operator.
• Multi coated optical components, free from chromatic and spherical aberration.
• One touch fine focus adjust trinocular camera port for quick, easy camera focusing and parfocaling the scope.

The ideal scope for a wide range of investigative/inspection applications, Aven's dynamic new microscope SPZH-135 extends the boundaries of stereo zoom microscopy, employing standard 15X eyepieces to achieve 21x to 135x continuous zoom magnification all the while providing a continuous working distance of 3.3" (84mm). Replacing the standard 15X eyepieces with our DHW20X eyepieces enhances the magnification range of this dynamic new microscope further - 28X to 180X. Having eyepieces set at a 45 degree angle, the adjustable interpupillary distance between eyepieces of 1.96" (50mm) to 2.91" (74mm) means they can be set to the comfort level of any user.