The SM-4T is a heavy-duty, highly-flexible microscope designed for biological and industrial applications. This model is especially popular in the QC, repair and engraving industries thanks to its ease-of-use and reliability. With its wide zoom range and double-arm boom-stand, this model will become an indispensable instrument in any workshop or lab. OpticsThe 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 wide-field eyepieces provide an ample magnification range from 7X to 45X, with high-eyepoint optics to accommodate glasses or goggles. 0.5X and 2X Barlow lenses are included, which can be alternated to either halve or double the magnification range, expanding the possible magnifications to 3.5X-90X. Ocular Adjustment Dual ocular diopters can be adjusted to maintain consistent focus, greatly improving productivity. Rotating interpupillary adjusters simplify the process of aligning the eyepieces for each user. Trinocular Port The switched trinocular photo-port provides a dedicated mount for a camera. When the photo-port is switched open, all light from the left objective is diverted to the port to provide maximum brightness for the camera to guarantee the best quality images. This microscope uses our CX series trinocular port, so it can be easily replaced with optional C-mount ports to match specific cameras. Double-arm Boom-Stand The multi-pivoting, double-arm stand provides a stable, flexible support system, ideal for hands-on work. Use of a drop-down column allows the head to be positioned at virtually any angle. Ball-bearings provide smooth movement of the lateral arms, which can easily pivot the microscope out of the way when it is not needed. The heavy, steel base ensures the stability of the microscope, even when laden with attachments. Additional ItemsThis package includes a 144-LED ring-light with quadrant-control 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. When you need some shadows to bring out more details, the power-controller provides control over four subdivisions to manipulate the directionality of the light. You can cast light from the top, bottom, or either side in order to bring out the necessary topological details. 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. Specifications Optical System: Greenough stereoscopic Head: Trinocular, 45° incline, 360° rotatable Photo Port: height-adjustable 23mm tube, CX series Interpupillary Adjustment: Compensation-free gemel, 54-76mm Ocular Diameter: 30mm Ocular Diopters: Both oculars, ±5dp Eyepieces: 10X Objective Lenses: 0.7X-4.5X zoom Objective Numerical Aperture: 0.065 @ 4.5X, 0.02 @ 0.7X Objective Resolution: 195 lp/mm @ 4.5X, 60 lp/mm @ 0.7X Native Field-of-View: 4.4mm-28.6mm Native Working Distance: 100mm Auxiliary (Barlow) Lens: 0.5X, 165mm working distance2X, 30mm working distance Stand Type: Double-arm boom-stand with ball-bearing movement, cast-steel base Stand Dimensions: 20" double-arm (overall length: 30"), 17" high pillar, 10-1/4"x8-1/4"x2" Focusing-block Focus Range: 50mm Packing List:One trinocular stereo microscope head One photo port attachment 10X eyepiece(s) One 0.5X Barlow lensOne 2X Barlow lens One pair eye-guards One double-arm boom-stand with focusing rackOne LED ring-light One power controller One power cable One ring-light mounting adapter