0.5X is a condensing glass with a working distance of 165mm.Increase the working distance, reduce the multiple, the multiple after use is *0.5Auxiliar..
0.7X Barlow lens for SM series stereo microscopes, extending working distance and field view of the microscope and cutting magnification power by 0.7 ..
YCS 3060 30V 6A DC Power Supply 180W High Power For Tablet/ Mobile phoneYCS 3060 Power Supply Features:1. Two protection modes, front and rear output ..