National Optical Compound LED Microscope for Education, Rechargeable

The microscope that sets the standard for high school instruction, now with the freedom of rechargeable batteries. Includes all the most commonly specified features, like rugged metal construction and locked-on parts. Superior DIN optical system and precision mechanical components assure parfocalled and parcentered optical alignment for sharp, unsurpassed viewing. Utilizes rechargeable batteries for bright, cool illumination from long-life LED bulbs. **OPTICAL SYSTEM** - Widefield 10x eyepiece with revolving pointer. - 45° inclined viewing head rotates 360° for easy repositioning of eyepiece and sharing by more than one student. - DIN 4x, 10x, and 40xR, objectives are achromatic, parfocalled, parcentered, and color coded. - 3-hole nosepiece is ball-bearing mounted for more precise alignment, and has positive click stops. **ILLUMINATION** - LED light rated up to 50,000 hours life, illumination equal to a 20 watt tungsten bulb. - Equipped with 3 AA rechargeable NiMH batteries and auto-cutoff charger with LED charge indicator. - Single 8 hour charge allows up to 50 hours of use. - Variable on/off light control. **FOCUSING** - Rack & pinion coarse focus with tension adjustment, slip clutch, separate fine focus. - Stage moves up or down, eyepiece and body remain fixed. - Slip clutch prevents damage to focusing system. - Tension adjustment eliminates stage drift. - Safety rack stop prevents damage to slides and objective lenses. **STAGE** - Large 110 mm x 210 mm stage, with locked-on, spring mounted stage clips, drilled and tapped to accept optional mechanical stage. - Built in 0.65 condenser lens.