The T720Q is an economical microscope designed for professional biological applications. Its infinity-corrected optical system ensures reliable, low-distortion magnification, with plan-achromatic corrections for accurate colors, excellent field flatness and edge-to-edge sharpness. A quintuple lens-turret is used, providing five levels of magnification. The Koehler-design LED illumination system provides bright, evenly-distributed light for maximum contrast and definition. This model is a popular choice for veterinarians and university laboratories. The trinocular head accommodates simultaneous viewing through both eyepieces and the top-mounted photo port. The binocular viewing tubes use Siedentopf adjustment to easily fit any user. Focusable eyepieces are used to compensate for users with astigmatism or asymmetrical sight. For mounting a camera, the photo port provides a 23mm tube and a C-mount adapter for use with most microscopy imaging systems available. The quintuple objective turret provides instant access to 5 magnification levels to easily focus in on minute details from 40X to 1000X. Additional 25X eyepieces expand the maximum magnification to 2500X with 8 unique levels. This covers magnifications needed for studying hair follicles, cells, soil, and bacteria. The turret's reversed orientation provides more working room above the stage. These high-quality lenses are achromatically corrected to improve resolution and color accuracy, with planatic flat-field correction to provide edge-to-edge sharpness. The large 2-layer mechanical stage provides smooth and precise movement for examination of specimen slides. The rackless design provides a wide range of movement without the obtrusive, exposed teeth of conventional mechanical stages. The stage's low-position controls are conveniently placed near the coaxial focus knobs for a streamlined workflow. Examining specimen slides is intuitive and precise for users at any skill level. Built on Koehler illumination principals, the sub-stage lighting provides evenly-distributed light for optimal contrast. The LED light-source ensures cool, energy-efficient illumination with low heat for live specimens. The bright light-source is daylight-balanced to produce natural colors for imaging. The Abbe light condenser has a high 1.25 numerical aperture for oil-immersion, and an iris diaphragm to optimize contrast and depth-of-field. The condenser holder uses rack-and-pinion height adjustment for precision control, and is centerable for proper alignment. The illuminator's field lens provides an iris diaphragm to control light-spread, optimizing contrast and definition in specimen features. Specifications Optical System: Infinite-conjugate Head: Trinocular, 30° incline, 360° rotatable Photo Port: fixed-height 23mm tube mount Interpupillary Adjustment: Siedentopf, 55-75mm Ocular Diameter: 30mm Ocular Diopters: none (use focusable eyepieces) Eyepieces: 10X, 25X Objective Lenses: Infinity-corrected Objective Parfocal Distance: 45mm Objective Mounting Thread: RMS 20.32mm Objective Turret: Reverse quintuple, ball-bearing movement Focusing System: Coaxial coarse and fine focus, tension control Focus Range: 24mm Division of Fine Focus: 0.001mm Stage Design: Rackless double-layer with caliper Stage Dimensions: 216mm x 150mm X-Y Translation Range: 75mm x 50mm Transmitted Illumination: Variable-intensity LED Condenser: NA1.25 Abbe condenser with iris diaphragm Sub-stage Condenser-holder: rack and pinion Power: 90-240VAC 50/60Hz wide-band Packing List:One trinocular head One microscope body Five objective lenses: 4X, 10X, 20X, 40X, 100X One pair 10X eyepiecesOne pair 25X eyepieces One power cord (US and Canada standard) One dust cover