Technical Specification: Microscope: Converging stereoscope with 2 step rotation magnichangerMain magnification: Objective Lens 1.3X Eyepiece 10X Mag. 13X , Objective Lens 1.8X Eyepiece 10X Mag, 18XEyepiece: High eye point 10X , paired (Optional 16X)Slit width: 0-10mm, Slit lenth : 0-10mm, slit rotation : 0-180 degrees