National Optical 440 Stereo Zoom Microscope on Post Stand

This National Optical stereo microscope is a professional-quality stereo microscope designed for industrial and educational use.

• Head: Choose from binocular or trinocular body. Viewing head rotates 360º.
  
• Objective Lenses: Zoom range of 0.7x - 4.5x.
  
• Eyepieces: Paired 10x widefield eyepieces are 45º inclined with dual diopter adjustments. Interpupillary adjustment from 55mm to 75mm. Accepts 23mm eyepiece reticle.
• Magnification: 7x - 45x. Optional auxiliary lenses or substitute eyepieces, which are available for purchase separately, can provide additional magnification.
  
• Specimen Stage: Two 80 mm stage plates are included: one frosted glass and one is a reversible black/ white plastic contrast.
  
• Stand: All metal frame. Heavy-duty post mount with locking collar, permits up or down adjustment of viewing head to accommodate different sized objects on stage. Stage has locked-on stage clips and a blue filter for transmitted light.
  
• Focusing: Large dual focusing knobs have a slip clutch to prevent damage, and tension adjustment eliminates focus drift. Dual light controls can provide top only, bottom only, or dual illumination.
  
• Illumination: Top and bottom lights are 3W LED. The top light has a directional beam and rheostat control.
  
• Size: Height: 340mm (13.4 in) up to 433 (17 in), Base width: 171mm (6.8 in), Base depth: 242mm (9.5 in)
• Weight: 5.4 kg (16 lbs)
• Warranty: Lifetime limited warranty.
• Working Distance: 110mm