BINOCULAR MICROSCOPE Viewing Oculars Binocular, Galilean type Magnification Change Three steps magnificatin 10x, 20x, 40x Eyepieces Wide field 10x, 15x Total Magnification -WF 10x eyepieces 10x., 20x, 40x -WF 15x eyepieces 15x, 30x, 60x ILLUMINATION UNIT Slit Image Rotation 0 to 180 degree Tilting Illumination 5° to 20° Filter Disc. Cobalt Blue, Red Free, Natural Density, & Open Aperture Diaphragm for infinitely variable slit lengths Slit Disphragm Disc Six apertures of 12, 9, 7, 3 and 0.2mm and a wedge shaped diaphragm fo infinitely variable slit lengths Halogen Lamp 6 Volt 20 W STANDARD ACCESSORIES Replacing Lamp one piece for illumination unit,15x Eyepieces Replacing Mirror,Hruby Lens,Testing Rod, Dust Cover and Fuse