NATIONAL 211-RLED Cordless Microscope (with mechanical stage)

Grades 9-12. An updated standard of precision optics, highly engineered mechanics, and extremely rugged construction-all together in these affordable scopes. Objective turret (nosepiece) is in reverse position to permit easier changing and positioning of specimen slides. Preferred by teachers, the cordless LED illumination system with intensity control provides optimum image brightness and virtually no bulb heat. These cordless microscopes provide excellent placement flexibility and will not dry out your living specimens.

• Widefield 10x/18-mm eyepiece with pointer
• 45° inclined monocular viewing head rotates 360° for easy sharing by students
• DIN standard 4x, 10x, and 40xR objectives are achromatic, parfocalled, and parcentered, decreasing the need for constant focus adjustment as magnifications are changed
• Reverse-position nosepiece is ball-bearing mounted for smooth, precise changes in magnification
• Separate low-position coarse- and fine-focus controls for ease of use and increased accuracy
• Slip clutch and stage stop prevents damage to the focus system, slides, and lenses
• Iris diaphragm increases your light control for better image contrast
• 211-RLED model adds a built-in mechanical stage for easier slide scanning, a 1.25 Abbe condenser with spiral focusing mount for even sharper image quality, and a 4-hole nosepiece where a fourth objective could be added for future use
• AA nickel-metal hydride batteries and AC adaptor charger included
• Lifetime limited warranty, excluding bulbs
• Size, 15" H x 6" W x 7" D; wt, 9 lb