VKSI 675x Trinocular Co-Axial Metallurgical Microscope with Top-Bottom Light * Co-axial coarse and fine focusing system travel on ball guides for smooth and long life movement is fitted with Trinocular head assembled from hard coated prism. * Top & Bottom Illumination: 20W with Intensity Control. * Equipped with iris diaphragm and slot for dropping filter. * Quadruple revolving BALL BEARING assembled nose piece. * Special graduated Low Drive co-axial mechanical stage. * Having built in base variable light control transformer, supplied with two filters & Dust Cover.