AmScope SM35180B 3.5X-180X Binocular Zoom Power Stereo Microscope Head

this video focuses on using an SM two series stereo microscope to adjust the focus tension on the SM two series stereo microscope look for the focus adjustment knob that says tension while holding the opposite knob in place turn the tension knob clockwise to increase the tension counterclockwise to decrease the tension be careful not to decrease the tension too much or the focusing rock will creep be sure that the tension is high enough to support the head and any accessories you've added to adjust the distance between the eyepieces simply take hold each interpupillary adjuster and gently pull them apart while looking through the eyepieces find a position that offers a comfortable field of view on the SM 2 series head each ocular tube has a diopter for independent focus adjustment each ocular tube has a silver ring the diopter must be set to just above that ring to maintain focus throug