Technical specifications:- Binocular tubes : fixed inclined at 45degree Eye pieces : 10x wf Magnifications : 3 step (5x, 10x, & 20x) Objective lens : f=200mm Field of view : 50mm Ipd adjustment : 55mm to 75mm Fine focusing : manual fine focusing by knob Illumination : through fiber optic light source 15v/150w twin halogen lamps Light intensity : 80, 000 lux max. At standard conditions Field of illumination : 70mm Arm : counter balanced pantographic arm with 320 degree rotation. Vertical range of counter balanced arm : 250mm to 300mm Floor stand : mobile floor stand on caster wheels for Easy handling and absolute stability. Base : 600mm x 500mm (approx) Height : 1500mm (approx.) Weight : 65kg (approx.) Power : ac 220v, 50/60hz. (110v on request)