... flexible and convenient. Microcomputer program control, with no dimming, speed control system. Turn the joint use of electromagnetic locking, ... 250,300,350,400 mm40mm focal range of fine focusing speed 1 ~ 2 mm / sMicroscope before and after, left ... arm 1200mmBearing arm rotation angle 360135 camera interface, a digital camera interface, 1 / 3 inch CCD camera interface, and dedicated digital cameras, ...