National Optical Model 420-1105-10, Stereo Zoom Microscope (10x through 40x)
The convenience and versatility of viewing a large picture at 10x magnification, then zooming continuously all the way to close-up detail at 40x magnification. Upright, unreversed 3-dimensional image remains in focus throughout zoom range. Optional eyepieces and auxiliary objectives expand magnification range and working distances.
Universal stand features heavy construction and counterbalanced arm for maximum stability. With an adjustable mounting post, it provides extreme flexibility in positioning.
Paired widefield 10x eyepieces are 45 inclined, with dual diopter adjustments, interpupillary adjustment from 55mm to 75mm. Accepts 23mm eyepiece reticle.
Viewing head rotates 360.
Achromatic, color corrected lenses.
Continuous magnification from 10x thru 40x. See specification chart for full magnification range available with use of optional auxiliary lenses
Rack and pinion focusing with large dual focusing knobs with slip clutch to prevents damage to mechanism. Tension adjustment eliminates focus 'drift'.
No built-in illumination is included with this model.
OTHER DIMENSIONS & SPECIFICATIONS
Head, focusing block and universal stand are in separate molded styrofoam containers with vinyl dustcover, eyeshields and instruction manual.
Master carton pack 1 each:
Nt weight: 78 #
Lifetime limited warranty excluding bulb, cord, and fuse