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 National Optical Model 104 Student Microscope
45� inclined viewing head is very convenient for younger students. Extra bright 15-watt illumination is built into base, features on/off switch on base and heavy-duty, 3-wire grounded cord and plug. Rugged metal frame, precision optical glass lenses. Student proofing features minimize loss of parts and other student abuse. Recommended for instruction through grade 6. OPTICAL SYSTEM Widefield 10x eyepiece with revolving pointer, 45� inclined for viewing ease when seated. Head rotates 360�. Achromatic, color-coded 4x, 10x 40xR objectives mounted on precision revolving objective turret, 40x, 100x and 400x magnification. ILLUMINATION Built-in base illumination, 115v 15 watt. On/off switch on top of base. Heavy-duty 3-wire grounded cord and plug. FOCUSING Oversized focusing knobs provide mid-range focusing between normal coarse and fine focus range. Slip clutch prevents damage to focus mechanism. Rack stop protects objectives and specimen slides. STAGE 88mm x 82mm stage (3-1/2 in. x 3-1/4 in.). Locked-on, spring activated stage clips. Substage disc diaphragm. With instruction brochure and vinyl dustcover WARRANTY Lifetime limited warranty, excluding bulb, cord, and fuse.
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