AmScope ZM290B Binocular Stereo Microscope Head

This is a 2X-90X zoom magnification binocular stereo microscope head with ultimate optical system, offering top-level sharp clear erect stereo images over a large zoom magnification range. It includes two Barlow lenses (0.3X & 2.0X) and a pair of extreme widefield high-eyepoint WH10X/22 eyepieces with foldable eyeguards. It comes with 45-degree inclined 30mm eyetubes with diopter. The extreme widefield optics and high-eyepoint design ensure an easy and comfortable observation. This microscope head fits all the stands with a 3" (76mm in diameter) O-ring holder. Features: 2X-90X Continuous Zoom Magnification Offering Top-Level Quality Images 45-degree Inclined Binocular Head with Extreme Widefield High-Eyepoint Eyepieces 30mm Extreme Widefield WH10X/22 Eyepieces High Resolution with Great Flatness and Contrast Sharp Stereo Erect Images over a Wide Field View Crystal Clear Original True Color Images Both Ocular-Tubes with Adjustable Diopter Large Working Distance 14" (350mm) Accurate Alignment Ensuring a Fatigue-Free Viewing Full Optical Glass Elements Precise Ground Glass Lens All Metal Mechanical Components Adjustable Interpupillary Distance Rubber Eyeguards Included Manufactured under ISO 9001 Quality Control Standard Excellent Five (5) Year Manufacturer Warranty   Specifications: Head: 45-degree inclined 360-degree swiveling binocular Eyepiece: 30mm extreme widefield high-eyepoint WH10X/22 Barlow Lens: 0.3X and 2.0X Objective: 0.2-9.0X Zoom Range: 45:1 Diopter Adjustment: ±5dp Interpupillary Distance: 2-3/4" - 2-15/16"(47-75mm) Field of View: 5-3/4" (145mm) Working Distance: 14" (350mm) Head Mounting Size: 3" (76mm) in diameter Accessory Mounting Size: 1-7/8" (48mm female thread) in diameter   Packing List: One Binocular Stereo Zoom Head One Pair of Extreme Widefield WH10X/22 Eyepieces One 0.3X Extreme Widefield Barlow Lens One 2.0X Extreme Widefield Barlow Lens One Pair of Foldable Eye-Guards User's Manual Download Shipping Weight: 10 lbs