National 431-430-PHF-10 Stereo Microscope

National 431-430-PHF-10 Stereo Microscope

National 431-430-PHF-10 Stereo Microscope

B&H # NASM431PHF10 MFR # 431-430PHF-10
National 431-430-PHF-10 Stereo Microscope

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Product Highlights

  • 2x, 4x Magnification
  • Widefield 10x Eyepiece
  • Viewing Head Rotates 360°
  • Halogen and Fluorescent Illumination
  • All-Metal Frame
  • Rack and Pinion Focusing
  • Lifetime Limited Warranty
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You Pay: $434.00

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  • 1Description

The National Optical & Scientific Instruments 431-430-PHF-10 Stereo Microscope sets itself apart from the rest of the models in the 430 series with its 2x and 4x magnification provided by paired 10x eyepieces. Inclined at a 45° angle, the two eyepieces also feature diopter adjustment, a reticle holder/retainer, and the ability to rotate 360° on the viewing head. Magnification is controlled by rotating the objective turret 90° to positive click stops.

The 431-431-PHF-10 also features top and bottom light illumination. The user can choose to use the halogen top light, the fluorescent bottom light, or both lights together. The base of the microscope consists of two 80mm stage plates, a blue filter for transmitted light, and locked-on stage clips. Rack and pinion focusing ensures a clear image, while the post mount can be adjusted up or down to accommodate different sized objects on the stage.

Optical System
  • Paired widefield 10x eyepieces, inclined 45 degrees, diopter adjustment, interpupillary adjustment from 55mm to 75mm
  • Eyepieces equipped with reticle holder/retainer to accept reticle with 23mm O.D.
  • Viewing head rotates 360°, adjusts up or down on post mount to accommodate difference size specimen
  • Paired objectives are parfocalled, parcentered and achromatic
  • Magnification changed by rotating objective turret 90° to positive click stops
Illumination
  • Top light (incidental) is 12V, 15 watt halogen, bi-pin with adjustable beam with variable intensity control
  • Bottom light (transmitted is 120V, 5 watt fluorescent
  • 4-position light control: top only / bottom only / top and bottom / off
Base
  • Professional, all-metal frame
  • Rack and pinion focusing with slip clutch and tension adjustment
  • Heavy-duty post mount with locking collar, permits up or down adjustment of viewing head to accommodate different sized objects on stage
  • Includes two 80mm stage plates: frosted glass and reversible black/white plastic contrast plate
  • Blue filter for transmitted light
  • Locked-on stage clips
In the Box
National 431-430-PHF-10 Stereo Microscope
  • Limited Lifetime Warranty
  • Table of Contents
    • 1Description
    Microscope Type Stereoscopic
    Magnification 2x, 4x
    Objectives Not specified by manufacturer
    Eyepiece Widefield 10x, 20mm
    Light Source Top light: 12V 15W halogen
    Bottom light: 120V 5W fluorescent
    Overall Dimensions Height: 13" / 325mm
    Weight Not specified by manufacturer

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