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National 420 Zoom Series  
National 420 Zoom Microscope.
Model 420		 The convenience and versatility of viewing a large picture at 10X magnification, then zooming continuously to 40X magnification. Upright, unreversed “3D” image remains in focus throughout the zoom range. Features top light with directional beam, bottom light with cool, long-life fluorescent illumination.
  • Paired 10X widefield eyepieces, 45° inclined.
  • Dual diopter adjustment with interpupillary adjustment from 55mm to 75mm.
  • Rotatable 360° viewing head.
  • Zoom range 10X thru 40X.
  • Four position light control, 6V Watt Tungsten with rheostat top light and
    5W fluorescent cool bulb base light.
Also available with rigid arm stand.
420 ZOOM STEREO
Cat. No. Eyepiece Objective Illumination  
420-430 PHF-10 10X WF Zoom (10X thru 40X) Top & Bottom
$550.00
420ZT Trinocular 10X WF Zoom (10X thru 40X) Top & Bottom
$665.00