National optical stereo microscope. The quality features and versatility of larger stereo microscopes, in a compact size only 12-inches tall. Ideal size for elementary and middle school, rugged enough for high school. Upright, unreversed image is designed for three-dimensional objects and dissecting. Choose low magnification for a wide field of view, then high magnification for close-up detail. Optical system: Paired widefield 10x eyepieces, left-side diopter adjustment, interpupillary adjustment from 55 to 75-millimeters. Eyepieces equipped with reticle holder/retainer to accept reticle with 23-millimeters OD Paired objectives are parfocalled, parcentered, achromatic. Magnification changed by rotating objective turret 90 degrees, to positive click stops. Fixed head. Illumination: 4-position light control: top only, bottom only, top and bottom, off. Top light (incidental) and bottom light (transmitted) cordless LED illumination. 8 hour charge provides up to 50 hours of use. Focusing: Rack and pinion focusing with slip clutch and tension adjustment. Stage: Supplied with two 80-millimeters stage plates, one frosted glass and one plastic black/white reversible contrast. Two locked-on stage clips. Frame: Rugged cast metal frame, gray enamel finish. Molded styrofoam container with instruction brochure, vinyl dustcover and rubber eyeshields. Objective: 2x, 4x. Total Magnification: 20x, Field Size: 10-millimeters. Field size: 10-millimeters, 5-millimeters. Working distance: 75-millimeters. Maximum specimen height: 35-millimeters. Molded styrofoam container with instruction brochure, eyeshields and vinyl dustcover. 5 year limited warranty, excluding bulbs, cord, and fuse.
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