The SM-4TP 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. The trinocular photo-port is simul-focal, so it can be used simultaneously with both eyepieces. 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. 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. Simul-focal Trinocular Port The simul-focal optics in this microscope allow the trinocular port to be used simultaneously with both eyepieces. This means a camera can stream live images from the microscope while you continue to work with full stereoscopic vision. This is accomplished by sharing the left objective lens with the left ocular and the photo-port. 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. Specifications Optical System: Greenough stereoscopic Head: Trinocular, 45° incline, 360° rotatable Photo Port: height-adjustable 23mm tube, CX series, simul-focal 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: none included 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 pair eye-guards One double-arm boom-stand with focusing rack