The instrument is a kind of binocular or trinocular stereo microscope, which can zoom magnify the micro object and get an erect image. It can be used for educational experiment, medical research, and agricultural observation, science research and also for assembling and repairing in electronic industry and other relative fields. Features: Sharp stereo erect image over a wide field of view.45angel inclined and 360angel rotatable binocular head with locked-in eyepiece. The left ocular-tube with diopter adjustment ＋5dp. The interpupillary distance is between 55~75mm. Product has CE approval Power supply 110V/60Hz or 220V/50Hz Illumination: L1. Upper reflected halogen light 12V10W; down halogen light 12V10W; L2. Upper reflected halogen light 12V10W; down halogen light 12V10W; brightness is adjustable.; L3. Fluorescent lamp 5W for transmitted light and halogen lamp 12V/10W for incident light; L4. Fluorescent lamp 5W for transmitted light and halogen lamp 12V/10W for incident light. Brightness is adjustable; L5. It always adopts LED lights for the transmission and reflex illumination. Each set packed in Styrofoam and in an inner box. Two sets in one carton. The outer measurement is 41?5?1.50cm(GRGH1040B),50?7?8cm(GRGH1040BT/GRGHZT3). /shhh_3_product6.htm