Description:
National Optical 453TBL-10-LED Dual Magnification Stereo Microscope, 2X & 4X. All the quality features and versatility of larger stereo microscopes, in a compact size only 12" 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. Rack & pinion focusing with slip clutch and tension adjustment. Shipping Weight: 9 Lbs
OPTICAL SYSTEM
Paired widefield 10x eyepieces, left-side diopter adjustment, interpupillary adjustment from 55mm to 75mm. Eyepieces equipped with reticle holder/retainer to accept reticle with 23mm O.D. 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.
