Coaxial Control by Right Hand, Scale Division: 0.1mm Viewing Heads Monocular, Binocular or Trinocular inclined at 30º & rotatable through 360º. Total magnification 40X-1500X Nosepiece Roller bearing Inverted Quadruple High Point eyepiece WF 10X Infinity Ach. Objectives 4X/10X/40X/100X Focus Adjustment Coaxial coarse and fine focus adjustment with tension. Control Range: 20mm, Division of Fine Focusing: 2um Stage Travel range : 50x75mm. Illumination Illuminator (without FOV Diaphragm).