Microscope Type:Galileo Parallel Angle Type Total Magnification:10X,16X,25X Eyepiece:12.5X Interpupillary Distance Adjustment: 52mm-78mm Diopter Adjustment: -6D - +6D FOV Diameter:8.5mm(25X),13.5mm(16X),22mm(10X) Slit width:0-14mm adjustable Slit length: 1-14mm adjustable Light Source: 6V/20W Halogen Bulb Slit angle:0-180 Slit inclination:5,10,15,20 Filter: Heat absorption, Grey, Redfree, Cobalt blue Aperture Size:0.2mm,1mm,2mm,3mm,5mm,10mm,14mm Illumination:>=60KLX