This is a trinocular stereo zoom microscope with a compact stand with 12" pillar. The stand's base has a small footprint to take up minimal space. The microscope incorporates all the most excellent features of a high quality laboratory instrument. Designed to meet the demands of modern microscopy applications, this microscope exceeds all expectations. It comes with SUPER widefield optics and basic table stand. This microscope offers high resolution and good depth within a broad field of view. It provides crystal clear sharp stereo images with a 4" (100mm) native working distance. Its 45 degree inclined ocular tubes ensure an easy observation and rubber eyeguards provide further comfort. Its trinocular port enables you to add photo or video capability. The stereo optics provide clear, sharp images with excellent focus-depth and a large working-distance. With 0.7X-4.5X zoom objectives, moving through the magnification range is as easy as turning a knob. 10X and 20X eyepieces are included, as well as 0.5X and 2X Barlow lenses to provide an expanded magnification range from 3.5X-180X, with high-eyepoint optics to accommodate glasses or goggles. This microscope is useful for many applications. It can be used in gemology, geology, forestry, archaeology, agriculture and biology. It is appropriate for educational purposes in hospitals and schools. It is great for the exploration of the world of surface details and fine structures of various materials like wood, metal, solder, semiconductor and gemstone. It is perfect for the examination of insects, plants, rocks, stamps, coins, jewel, soldered points, microelectronic components, circuit boards or virtually any three dimensional objects. This scope is an ideal tool for research labs, gemologists, collectors, engravers, watchmakers, jewelers, dies-makers, philatelists, and anyone in semiconductor or electronic industry. This package includes a 144-LED ring-light for bright and cool illumination. This lightweight illuminator mounts to the microscope’s objective housing, and projects a smooth, encompassing field of light over objects, eliminating most shadows. Whether used as the sole light-source or in combination with additional illuminators, the ring-light produces a crucial light pattern for virtually any application. Energy-efficient and producing low heat, this ring-light can be used with biological specimens as well as industrial. Features : 0.7X-4.5X Continuous Zoom Objective Lenses A photo port for adding a camera 30mm Super Widefield Oculars 4" (100mm) Large Native Working Distance 45 Degree Inclined Ocular Tubes Crystal Clear Original True Color Images Erect Sharp Stereo Images over a Super Widefield of View High Resolution with Great Flatness and Contrast Accurate Alignment Ensuring Fatigue-Free Comfortable Observation Both Ocular Tubes with Adjustable Diopters Adjustable Interpupillary Distance Full Optical Glass Elements Precise Ground Glass Lenses Metal Pillar Stand Finished with Stain Resistant Enamel All Metal Mechanical Components Specifications Head Type: Trinocular, 45° incline, 360° rotatable Optical System: Greenough stereoscopic Interpupillary Adjustment: Compensation-free gemel, 54-76mm Ocular-port Diameter: 30mm Dioptric Adjustment: Both oculars, ±5dp Eyepieces: 10X, 20X Photo Port: height-adjustable 23mm tube, CX series Objective Lenses: 0.7X-4.5X zoom Objective Numerical Aperture: 0.065 @ 4.5X0.02 @ 0.7X Objective Resolution: 195 lp/mm @ 4.5X60 lp/mm @ 0.7X Native Field-of-View (10X Eyepieces): 4.4mm-28.6mm Native Working Distance: 100mm Auxiliary (Barlow) Lens: 0.5X, 165mm working distance2X, 30mm working distance Stand Type: Pillar stand with large base Stand Dimensions: Base: 10" x 7-7/8" x 10.75" (254 x 200 x 275mm); Pillar 12" (300mm) height, 1.25" (32mm) diamater Focusing-block Focus Range: 50mm Stage Plate Diameter: 95mm Packing List:One trinocular stereo microscope head One photo port 10X eyepiece(s) 20X eyepiece(s) One 0.5X Barlow lensOne 2X Barlow lens One pair eye-guards One stand base One stand pillar One focusing block One pair stage clips One black/white stage plate One hex wrench Screws and washersOne LED ring-light One AC adapter One ring-light mounting adapter