National Optical 420T Stereo Zoom Microscope

National Optical's stereo zoom microscope on a universal (boom) stand offers upright, unreversed 3-dimensional images that remain in focus throughout the zoom range. Optional auxiliary objectives expand magnification range and working distances.

• Objective Lenses: 1x - 4x objective - provides continuous zoom magnification. Viewing head rotates 360°.
• Eyepieces: Choose from paired widefield 5, 10x, 15x or 20x eyepieces that are 45° inclined, with dual diopter adjustments, interpupillary adjustment from 55mm to 75mm. Accepts 23mm eyepiece reticle. Microscope is trinocular and has a beam splitter which allows the light from the left eyetube to travel to the trinocular port for better camera light. Includes a C-Mount Adapter as well as an SLR adapter.
• Total Magnification: Zoom range of the following: Zoom range of the following: Please view the Magnification Chart for complete details on working distance and field size at different magnifications.
  • 5x eyepieces - 5x - 20x
  • 10x eyepieces - 10x - 40x
  • 15x eyepieces - 15x - 60x
  • 20x eyepieces - 20x - 80x
• Stand: Professional all-metal boom stand - heavy-duty post mount with locking support collar, permits up or down adjustment of viewing head to accommodate different sized objects. Base of stand is 285mm (11.2") x 260mm (10.2") x 32mm (1.3"). Maximum distance from vertical post to end of the base is 235mm (9.3"). Vertical post is 380mm (15") tall. Horizontal post is 530mm (20.9") long.
• Focusing: Rack and pinion focusing with large dual focusing knobs with slip clutch to prevent damage to mechanism. Tension adjustment eliminates focus 'drift'.
• Illumination: Select fluorescent ring light, LED ring light, 150w halogen fiber optic dual pipe light, or 150w halogen fiber optic ring light.
• Camera Option: Your choice of 1.3, 2.0 or 3.0 mega pixel camera with software for capturing images and making measurements. The camera will mount directly to the included c-mount adapter on the trinocular port.
• Size & Weight: 15.4" high, 51 lbs.
• Warranty: Lifetime limited warranty on microscope, 1-year warranty on camera and illuminator.