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National Model 108 Collectible Microscope Beige Scientific Instrument:
$35.98
National Optical Model 108, a compound monocular microscope designed primarily for high school and homeschool biology instructions.Key Specifications & FeaturesMagnification: provides 40x, 100x and 400x total magnification using a widefield 10x eyepiece and three achromatic objectives (4x, 10x, and 40xR).Illumination: The Model 108 features a 42mm plano-concave mirror for light collection, though variants like the 108-LED utilize rechargeable battery-powered LED lighting.Optical Design: Includes a 360° rotating head for easy sharing and a 45° inclined eyepiece for comfortable viewing while seated.Focusing System: Uses a rack and pinion mechanism with separate coarse and fine focus knobs. A slip clutch is built-in to prevent over-turning and damage to the focusing gears.Build Quality: Constructed with a rugged cast metal frame and a gray enamel finishIn excellent condition
