The AmScope SM-8BW2-144S professional stereo zoom microscope has interchangeable pairs of 10x and 25x super-widefield high-eyepoint eyepieces, a 0.7x-4.5x zoom objective, and an articulating-arm boom stand with clamp. The microscope has an overall magnification range of 3.5x-225x. The binocular viewing head has an interpupillary range of 55 to 75mm, a 45-degree inclination to reduce eye and neck strain, and 360-degree rotation to enable sharing. The WH10x20mm and WH25x9mm super-widefield high-eyepoint eyepieces combine with the 0.7x-4.5x zoom objective to provide continuous zoom magnification and a longer working distance for inspecting large-scale specimens that require handling or repair. The microscope comes with 0.5x and 2.0x Barlow lenses that can be added to the objective to increase the magnification range. A Barlow lens with a magnification of less than 1.0 reduces magnification and increases the working distance, while a Barlow lens with a magnification greater than 1.0 increases the magnification and reduces the working distance. High-eyepoint eyepieces ease viewing for users who wear glasses, and dioptric adjustment accommodates individual eye-strength differences. A stereo microscope, sometimes called an inspection or dissection microscope, has low magnification and a long working distance that enables users to manipulate the object being inspected. The removable 144-bulb LED ring light provides bright, cool light for working with temperature-sensitive or live specimens. The ring light provides shadow-free illumination, and a rheostat controls the amount of light emanating from the lamp. Power and adjustment controls are located on the light head. The ring has a 2.4" (61mm) inside diameter and a 4" (100mm) outside diameter. It has a 100,000-hour life span and a 110V-240V variable power supply. The pillar-type articulating-arm base has a 40" reach for covering a large work space. The pillar is 24" and the holder ring has a 3" diameter. The stand is secured to the edge of a desk or table with a clamp. SpecificationsHeadBinocularMagnification range3.5x-225xZoom objective power0.7x-4.5xEyepieces (DIN, 30mm)WH10x20mm and WH25x9mm high-eyepointZoom range65:1Field of view2-1/2"Optical working distanceUp to 8"Microscope standArticulating-arm boom stand with clampHead movementX-, Y-, and Z-axesIllumination typeEpiscopic (reflected)Light source144-bulb led ring light with rheostatPower110V-240VMicroscopes are instruments used to enhance the resolution of an object or image. Types include compound, stereo, or digital. Compound microscopes use a compound optical system with an objective lens and an eyepiece. Stereo microscopes show object depth in a three-dimensional image. Digital microscopes are used to display an image on a monitor, rather than looking through a lens. Microscopes can have monocular (one), binocular (two), or trinocular (three) eyepieces, with varying magnification abilities. Magnification ability refers to the size of an image. Resolution, also known as resolvant power, refers to the clarity of the image. The interaction between field of view (FOV), numerical aperture (NA), and working distance (WD) determines resolution. Microscopes can control magnification through a fixed focus, or through a range of adjustments. They can also utilize LED, fluorescent, and mirror light sources to help control viewing capabilities. Microscopes are widely used in education, lab research, biology, metallurgy, engineering, chemistry, manufacturing, and in the medical, forensic science, and veterinary industries.United Scope manufactures microscopy equipment and accessories under the brand name AmScope. The company, founded in 1996, is headquartered in Irvine, CA.What's in the Box?AmScope SM-8BW2-144S stereo zoom microscope with articulating-arm boom stand with clampWH10x20mm eyepieces, 30mm, one pairWH25x9mm eyepieces, 30mm, one pair0.5x Barlow lens2.0x Barlow lens0.7x-4.5x zoom objective144-bulb LED ring light with power supply (LED-144S)Focus rackEye guards, one pairInstructions
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