The size of mechanical stage id 135mmx140mm. X-Y movement is controlled through low co-axial drive controls and cross movement of 50mmx70mm with fully graduated vernier scales. Low mounted concentric coarse and graduated fine focusing control knobs act directly on the stage, which is counter balanced and run on precision ground linear roller bearing to give frictionless motion. The tension of coarse focus control can be adjusted through a tightening ring. Bright field’s condenser Abbe N.A. 1.25 with iris diaphragm and swing out filter holder can be mover through Rack Pinion Knob. The condenser unit incorporates high efficiency optical system for optimum utilization of light from low to high magnification. It is interchangeable with professional accessories.