This 6.7X-225X zoom magnification binocular stereo microscope head offers top-level sharp clear erect stereo images over a large zoom magnification range. It includes a 2.0X Barlow lens and two pairs of extreme widefield focusable eyepieces (WH10X/22 & WH25X/12). Its outstanding optical system ensures an easy and comfortable observation. This microscope head fits all the stands with a 3" (76mm in diameter) O-ring holder. Features: 6.7X-225X Continuous Zoom Magnification Offering Top-Level Quality Images High Quality Extreme Widefield Focusable 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 4" (100mm) 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 Specifications: Head: 45-degree inclined 360-degree swiveling binocular Eyepiece: 30mm extreme widefield high-eyepoint focusable WH10X/22 and WH25X/12 Barlow Lens: 2.0X Objective: 0.67-4.5X Zoom Range: 34:1 Diopter Adjustment: ?5dp Interpupillary Distance: 2-3/4" - 2-15/16"(47-75mm) Field of View: 1-3/8" (35mm) Working Distance: 4" (100mm) 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 Pair of Extreme Widefield WH25X/12 Eyepieces One 2.0X Extreme Widefield Barlow Lens One Pair of Foldable Eye-Guards User's Manual Download Shipping Weight: 10 lbs

This 6.7X-225X zoom magnification binocular stereo microscope head offers top-level sharp clear erect stereo images over a large zoom magnification range. It includes a 2.0X Barlow lens and two pairs of extreme widefield focusable eyepieces (WH10X/22 & WH25X/12). Its outstanding optical system ensures an easy and comfortable observation. This microscope head fits all the stands with a 3" (76mm in diameter) O-ring holder. Features: 6.7X-225X Continuous Zoom Magnification Offering Top-Level Quality Images High Quality Extreme Widefield Focusable