An ideal platform for micro positioning, this precision stage was originally designed as a positioning stage for large industrial stereo microscopes. Utilizing two rack and pinion movements to allow for travel in both the X and Y directions. Stage has a 100mm diameter platform (6mm thick) on one side and a 100mm square platform (5mm thick) on the other side, and can be positioned in either orientation. Removable top platform and bottom platform attach to stage via (4) M4 tapped holes. Distance from center line to outside edge of knob is 75mm.