Magnification range 4.8x to 105x.Objectives 0.6x, 1x, 2z, 4x, 7x zoom changer. Coated lens eyepieces WF8x &WF15x, one measuring eyepiece 8x of 30mm dia, one eyepiece tube with diopter adjustment and rubber eyeguards. Field of vision dia. 39.6 to 2.3mm, working distance 95mm. Fine focus by rack and pinion motion, adjustable head in height On pole stand. Round glass stage with Black & White matted plate for field Contrast. Incident light 6V-20W bulb solid state variable control, input 220VAC.