National Optical 106-LED Overview The 106-LED Compound Microscope from National Optical is a three-objective intro-level microscope designed for elementary school students. Achromatic eyepiece and objectives minimize image distortions and deliver consistent images on all three magnification settings. The user-friendly microscope design has dual coarse-focusing knobs and features that are intended to prevent mishandling by novice users. National Optical engineered this vertical compound microscope to be easy to use, durable, and feature-rich enough to help transition older elementary school students to more sophisticated microscopes. Optical System 10x eyepiece with revolving pointer 4x,10x,40xR achromatic and color-coded objectives 40x,100x, 400x magnification Rotating objective turret with click stops Focusing Dual coarse focusing knobs Rack-and-pinion focus system Slip clutch prevents over-turning Tension adjustment prevents focus drift Rack stop prevents damage to slides and protects lenses Lighting LED illuminator (20 watt equivalent) On/Off with rheostat switch 6-hole disc diaphragm Cordless LED illuminator; powered by NiMH batteries Construction Details 3.5x3.25" (8.8x8.2cm) stage with locked-on spring-activated clips Cast metal body with inclination joint Grey enamel finish 11.75" (29.5cm) height 3.7lb (1.7kg) weight
