B-150POL-B is Binocular polarizing microscope on round stage with 400x zoom with head. Eyepiece is WF10x/18mm and objective DIN Achromatic 4X/10X/40X. Rotatable stage 120mm diameter. It offers coaxial coarse and excellent focusing mechanism along with limit stop. Condenser is 1.2 N.A. with diaphragm. 1W LED enlightens with exterior power supply. It also contains rotatable swing-out polarizer and slide-out analyzer.