Binocular Stereo-Zoom 23mm Microscope with dual boom ball-bearing stand offers superior convenience and uncompromising optical quality. A 26" stainless steel horizontal boom extension and 19.5" vertical boom are mounted to a 10" die-cast base. Ball-Bearing design allows fluid horizontal extension of the boomstand. Extensive flexibility and adjustability allow this microscope to alter angles up to 45°; the head can be rotated 360° in its focus mount.