National 420T-1105-10

National 420T-1105-10
National's 420T Series offers the convenience and versatility of viewing items at 10X magnification, then zooming continuously to maximum detail at 40X magnification. The upright, unreversed image remains in focus throughout the zoom range. The 420 Series also features achromatic, color corrected lenses, tension adjustment and 360ᄚ rotating viewing head. Trinocular port accepts optional video c-mount and SLR camera adapters (included). View specimen at 10X magnification, 40X magnification, or anywhere in between with this 1:4 stereo zoom microscope. Trinocular port accepts optional video c-mount and SLR camera adapters (included).


  • 1x to 4x Zoom


  • 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.


  • Large dual focusing knobs with slip clutch to prevent damage to mechanism.
  • Tension adjustment eliminates focus 'drift'.


  • No built-in illumination is included with this model.


  • 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)


  • 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.)


  • Head, focusing block and universal stand are in separate molded styrofoam containers with vinyl dustcover and eyeshields.
  • Master carton pack 1 each:
  • Head & focusing block: Ship wt. 4.1 kgs (9 lbs), Dimensions 400x425x275mm (16x17x11 in.)
  • Universal boom stand: Ship wt. 19.1 kgs (42 lbs), Dimensions 500x325x300mm(20x13x12 in.)


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More Information
MSRP 1,110.00
Head Type Trinocular
STEM Approved No
Illumination None
Power None
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National 420T-1105-10