Technical specifications: Binocular microscope Eye pieces : 10x, 15x Objective : 1x, 1.6x Total magnification : 10x, 16x and 24x Illumination unit: Slit image rotation : 0 to 180 Tilting illumination : upto 20 Filter disc. : cobalt filter, green filter, yellow filter, natural density and open aperture Slit disphragm disc : six apertures of 12, 9, 7, 3 and 0.2mm and wedge shaped diaphragm for infinitely variable slit lengths. Halogen lamp : 6 volt 20 watts Standard accessories: 15x eyepieces, replacing lamp one piece for illumination unit. Replacing mirror, hruby lens, plastic breath shield, testing rod. Dust cover and fuse.