The 400TBL-15-3 3x Stereo Microscope from National Optical is a single magnification stereoscopic microscope suited for users of all ages. The stereo (dual) eyepiece design displays greater image depth than monoculars and provides more comfortable viewing over long periods of observation. The 400TBL-15-3 features 45x magnification, and overhead and substage tungsten illumination. A user-friendly design complements the range of features that make the 400 series a welcome addition to labs as well as classrooms. This microscope has a single focusing dial and an adjustable post for raising the viewing head to accommodate specimens up 60mm / 2.3" in height. The focus system also includes slip clutch and rack stop mechanisms that prevent mishandling and help make this optical instrument novice-proof. Optical System Paired 15x vertical eyepiece 3x Achromatic objective lens 45x magnification parfocalled, parcentered, paired objectives Focusing Rack and pinion focus system Slip clutch prevents over-turning Tension adjustment prevents focus drift Rack stop prevents damage to slides and protects objective Lighting 10 watt overhead and substage tungsten illumination Base-mounted On/Off switch Construction Details 80mm frosted glass with reversible black/white contrast plate Locked on metal stage clips Cast metal body Grey enamel finish 11" (28 cm) height 5 lb (2.3 kg) weight
