Product descriptions from the supplier Overview Metallurgical Microscope Specifications Model JX-200E Optical system Finite color corrected optical system Viewing head Gemel trinocular,45 °inclined,Diopter adjustment ±5 for each side,Interpupillary distance adjustable between:54-75mm,refract rate,binocular : trinocular =80%:20% Eyepiece High eyepoint wide field plan eyepiece PL10X/18mm High eyepoint wide field eyepiece WF15X/13 High eyepoint wide field eyepiece WF20X/10mm Objective LWD plan achromatic metallurgical objective 5X,10X,20X,50X,100X Nosepiece Reversed quadruple nosepiece Reversed quintuple nosepiece Focusing Low position coaxial coarse and fine adjustment. With tightness adjustment. Coarse adjustment range 38 mm;precision of fine adjustment:2um stage Three-ply mechanical stage,area 180mmX155mm,right hand low position control,Moving range:75mm 40mm; Metal stage plate,center hole dia.�?12mm Illumination Reflection Koehler illumination with iris diaphragm and center able field diaphragm , wide-range voltage 90-240V ,6V/30W halogen bulb(single 3W LED option), with continuous intensity Polarizing kit Polarizer and the analyzer can be removed from the optical path, the analyzer can be rotated 360 . Photo accessories Photo tube(with PK mount),photo eyepiece 3.2X Video accessories CTV0.5X/1.0X software specialized metallographic analysis software