System 273 binocular stereo-zoom microscope perfect for assembly and rework applications due to its industry-leading 23mm optics system and nearly 8 inch working distance (when used with 0.5x reducing lens). standard 7x - 45x magnification range. High-quality achromatic lenses with anti-reflective coatings. 360⁰ head rotation in its focus mount. Alter angles up to 45⁰. .7 - 4.5 Zoom range controlled by dual graduated knobs on both sides of the head. Heavy-duty aluminum housing. Non-illuminated stand is 11.25 inch W x 11.5 inch D. The overall height is 11 inch measured to the top of the vertical post.