Binocular Stereo Microscope HSN 90118000 Specs: Eye Piece - Pair WF 10x20 mm eye pieces | Head - Trinocular heads with 45o inclined tubes. Both eye pieces with +/- 5 mm diopter adjustments . Inter pupillary distance adjustable between 55 mm to 75 mm | Objective - Zoom Ratio 6.4 : 1, 7x to 45x magnifications. Field of view from 33 mm to 4.9 mm. Working distance 100 mm | Stand - Ergonomically designed piliar or rack and pinion stand with Ergonomically designed pillar or rack and pinion stand with LED illumination and 2 object clamps. Alloy metal cast, hardened off-white painted | Focussing adjustment - Coarse adjustment , Moving on Ball Bearing Guide ways | Illumination - Transmitted and incident 3W LED illuminations with built-in 100-240V power supply. Both illuminators can be used gmu'taneously and the light intensities can be adjusted separately | Packaging - Supplied with power cord, dust cover, user manual. All packed in a polystyrene box. Optional (not included in the order) Optionai auxiliary lens 0.5X, 0.75X, 1.5X 2.0X. USB CAMERAS OR CCD cameras.