National Optical Model 420T-1107-10,  Stereo Zoom with Trinocular Port for Camera

National Optical Model 420T-1107-10, Stereo Zoom with Trinocular Port for Camera

National Optical Model 420T-1107-10,  Stereo Zoom with Trinocular Port for Camera
Click to enlarge image(s)
Model 420T-1107-10, Trinocular port accepts video or SLR adapters (included), 10x Thru 40x magnification (Zoom)
!0x 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).
Platform stand has a large work space and provides greater stability, which are important particularly for photographic or video applications.
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 360 degrees.
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.
82mm reversible black/white contrast plate.
Heavy-duty post mount with locking support collar, permits up or down adjustment of viewing head to accommodate different sized objects.
Total stand height: 246mm (9.8 in.). Net weight: 2.8 kgs (6.1 lbs).
Base width: 220mm (8.7 in.). Base depth: 280mm (11 in.)
Vertical post length: 220mm (8.8 in.). (O.D. 25mm)
PACKING
Head, focusing block and platform stand are in separate molded styrofoam containers with vinyl dustcover, eyeshields and instruction manual.
Master carton pack 1 each: Ship wt. 7.7 kgs (17 lbs), Dimensions 550x375x375mm (22x15x15 in.)
WARRANTY
Lifetime limited warranty excluding bulb, cord, and fuse.



Copyright © Edward Nightingale, Fort Myers, Florida
Enight@earthlink.net