National Optical Model 420T-1105-10,  Stereo Zoom 10x through 40x

National Optical Model 420T-1105-10, Stereo Zoom 10x through 40x

National Optical Model 420T-1105-10,  Stereo Zoom 10x through 40x
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Model 420T-1105-10 Trinocular port accepts video or SLR adapters (included).
10x Thru 40x magnification (Zoom)
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. Trinocular port accepts video or SLR adapters (included).
Universal stand features heavy construction and counterbalanced arm for maximum stability. With an adjustable mounting post, it provides extreme flexibility in positioning.
OPTICAL SYSTEM
Paired widefield 10x eyepieces are 45 degree inclined, with dual diopter adjustments, interpupillary adjustment from 55mm to 75mm. Accepts 23mm eyepiece reticle.
Viewing head rotates 360degrees.
Achromatic, color corrected lenses.
Continuous magnification from 10x thru 40x. See specification chart for full magnification range available with use of optional auxiliary lenses
FOCUSING
Large dual focusing knobs with slip clutch to prevent damage to mechanism.
Tension adjustment eliminates focus 'drift'.
ILLUMINATION
No built-in illumination is included with this model.
STAND
Professional, all-metal stand.
Heavy-duty post mount with locking support collar, permits up or down adjustment of viewing head to accommodate different sized objects.
Total stand height: 386mm (15.4 in.). Net weight: 18.1 kgs (40 lbs).
Base diameter: 200mm (8 in.). Base height: 55mm (2.2 in.)
Vertical post length: 331mm (13.2 in.). (O.D. 25mm)
OTHER DIMENSIONS & SPECIFICATIONS
Distance between main vertical post and center of field of view, when horizontal bar is adjusted to minimum or maximum extension: Minimum = 255mm, Maximum = 455mm
Distance from bottom edge of objective lens and work surface when horizontal bar is adjusted to minimum or maximum height:
With pivot arm up: Minimum = 170mm (6.8 in.), Maximum = 515mm (20.6 in.)
With pivot arm down: Minimum = 58mm (2.3 in.), Maximum = 260mm (10.4 in.)
PACKING
Head, focusing block and universal stand are in separate molded styrofoam containers with vinyl dustcover, eyeshields and instruction manual.
Master carton pack 1 each:
Shipping Wt.  76#
WARRANTY
Lifetime limited warranty excluding bulb, cord, and fuse.


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