Description Optical System 10X WF with 20 mm FOV eyepiece 0.7X to 4.5X objective Continuous zoom control Zoom ratio: 6.4:1 100 mm Working Distance Viewing Head Viewing head with 45° incline Interpupillary adjustment of 54 mm to 76 mm Diopter Adjustment Focusing Coarse focus adjustment 40 mm height adjustment range on focusing mechanism 70 mm working distance Stand Low profile plain stage with clips Solid Stand Compact design Illumination Eco-friendly and energy efficient LED illumination LED ring in transmitted light, provides homogeneous light distribution LED incident Illumination Membrane switch controls