(Click to see larger image) Narishige's SM-11 is the most popular (and versatile) micromanipulator for stereotaxic instruments because it can be attached to any of our AP frame bars and provides multi-axis movement. A coarse movement unit with a long working range is attached to the Z-axis, in addition to the fine movement adjustments included for each individual axis. These fine movement units have scales with minimum increments of 10µm (i.e. the total of a single rotation, 500µm, divided into 50 gradations), so that precise adjustments of 10µm are possible. In addition, the Z-axis fine movement unit has a sliding mechanism that enables approximate positioning of the X-axis. A rotation mechanism is provided for each of the X-Y, X-Z and Y-Z planes that allows approach from any required angle. Easy-to-use scales are provided wherever necessary, permitting for operations following a brain chart. Overall, this micromanipulator is simple to use and meets a wide variety of applications.