RS-3XH Slit lamp 1.10x 16x 25X 2.Zeiss style 3.with FDA Main specificationsZeiss styleMicroscope type: Galilean systemMagnification changer: Revolving drum(3 steps)Total magnification: 10X,16X,25XOcular magnification: 12.5 XOcular field: Ø18mmInter pupillary distance: 52mm~78mmDiopter adjustment: +6D to -6DObject image field Ø in mm: 22(10X ),13.5(16X),8.5(25X)Slit image width: 0~14mm ...