PW-BK5000 Series microscopes are equipped with infinite optical system, Kohler illumination, providing excellent optical quality and making image perfect. With low and forword position coaxial focus system, focusing knobs and brightness adjustable knob within reaching location, stable integral structure, reasonable ergonomic design, making operator feel more comfortable and dffective. Specification: * Magnification: 40X~1000X * Eyepiece: WF10X, 20mm. * Interpupiary distance: 50~75mm, diopter adjustment * Infinite Plan objectives(5pcs): 4x, 10x, 20x, 40x(s, oil), 100x(s, oil) * Stage: Mechanical stage with removable slide holder 190x140mm; Travel area 78(X)x55(Y)mm with a right-hand stage handle; 0. 1mm provide * Condenser: Abbe type N. A. =1. 25 with Iris Diaphragm. * Focusing: Coaxial coarse/fine focusing knobs. * Nosepiece: Quindruple click-stop Revolving mechanism with multiple ball bearing * Illumination: Built-in Koehler illuminator system, halogen 6V-20W, Adjust brightness, Field Diaphragm * Power Supply: 85V~265V universal power supply Standard accessory: * 6V/20W spare halogen lamp --- 1pc; * BGX 1-20(0. 5A) fuse --- 1pc * Blue ground glass filter --- 1pc * Dust cover --- 1pc; * English manual --- 1pc * Immersion --- 1bottle;