This is a highly-flexible stereo microscope, designed for workshops and industrial inspection. Featuring a simul-focal head, the photo port can be used concurrent with both eyepieces, allowing you to have an active imaging system without losing use of one of the eyepieces. The objective optics offer a contiuous zoom-range from 0.7 to 4.5X, providing 7-45X magnification with the 10X high-eyepoint, super-widefield eyepieces. The addition of a 2X Barlow lens increases the magnification range to 14-90X. This model also provides a zoom lock to maintain a fixed magnification for calibrated measurement applications. The nosecone provides a built-in ring-light adapter, as well as inner threading for auxiliary lenses and other attachments.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. Especially convenient for quality-control inspections, teaching demonstrations, and many other industry applications, your colleagues or students can simultaneously view clear images shown through the trinocular port while you work through the eyepieces. Simul-focal trinocular stereo microscope simultaneously views clear images through trinocular port and eyepieces Simul-focal trinocular stereo microscope simultaneously views clear images through trinocular port and eyepieces Simul-focal trinocular stereo microscope simultaneously views clear images through trinocular port and eyepieces 7X-90X super widefield stereo zoom magnification power 1-1/4 super widefield view and 4 working distance 3D boom stand allows point microscope head in any direction desired UPC 840979106699 Brand AmScope Color Black, Multicolor, Off-White, Silver Voltage 240 Volts Model Name SM-4T Series Manufacturer United Scope, LLC Model Number SM-4NTPY Power Source Corded Electric Light Source Type LED Real Angle Of View 45 Degrees Magnification Maximum 90 x Manufacturer Part Number SM-4NTPY Objective Lens Description Achromatic