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2026-11-06
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National Model 108 Collectible Microscope Beige Scientific Instrument
$37.00
$48.1
30% OFF
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Product Details
Description
Specifications
Care Guide
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 finish In excellent condition
Daily Cleaning: Use a soft brush or damp cloth to gently wipe away dirt. Avoid harsh chemicals. For mesh areas, use diluted mild detergent and a soft brush.
Drying: Air dry in a cool, shaded place after cleaning. Avoid direct sunlight or high heat, which can cause fading and glue deterioration.
Storage: Stuff with paper to maintain shape when not in use. Store in a dry, ventilated area to prevent mold. Rotate between multiple pairs to extend lifespan.
Usage Notes: Designed for basketball. Not recommended for hiking, long-distance running, or other specialized sports where different performance features are required.