National Model 111 Compound Microscope

National Model 111 Compound Microscope

National Model 111 Compound Microscope

B&H # NACM111I MFR # 111
National Model 111 Compound Microscope

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Product Highlights

  • DIN Standard 4x, 10x, 40xR Objectives
  • Monocular Viewing
  • Widefield 10x Eyepiece w/ Pointer
  • Built-In Electric Illuminator
  • Rack and Pinion Focusing
  • Focusing Safety Features
  • Rugged Cast Metal Frame
  • Lifetime Warranty
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National 111 overview

  • 1Description

The National Optical & Scientific Instruments Model 111 Compound Microscope is a budget-friendly microscope designed for students from the elementary level through grade 9. Featuring DIN standard achromatic 4x, 10x, and 40xR objectives, the 111 provides young students with 40x, 100x, and 1000x magnification of specimens. The 45° inclined widefield 10x eyepiece is easy for students to see through. It also sits on a 360° rotatable viewing head, which makes for easy sharing.

Illumination of specimens is provided by a built-in 115V, 20W electric illuminator. Rack and pinion focusing ensures smooth, precise adjustments for clear, accurate images. Safety features work to prevent damage to the system - including damage from over focusing. When it comes to the stage the 111 has a 4 3/8 x 4 3/4" platform with locked-on, spring mounted clips.

Optical System
  • Widefield 10x eyepiece with revolving pointer
  • 45° inclined viewing head rotates 360°. Permits stage to remain level when viewing wet slides, allows easy sharing by more than one student
  • Revolving triple nosepiece with positive click stops
  • Achromatic, parcentered, parfocalled DIN standard 4x (0.10N.A.), 10x (0.25N.A.) and 40xR (0.65N.A.) objectives are color-coded
  • Built-in 115V, 20W electric illuminator with on/off switch, heavy-duty 3-wire cord
  • Low-position focusing is rack and pinion, with slip clutch to protect mechanism against over-turning
  • Tension adjustment eliminates focusing drift
  • Safety rack stop prevents damage to slides and objective lenses
  • Large 4-3/8 x 4-3/4" (110mm x 120mm) stage with locked-on, spring mounted stage clips
  • 0.65NA condenser lens mounted in stage
  • Calibrated 5-hole disc diaphragm
  • Rugged cast metal, gray enamel finish
  • Height: 13.5" (340mm); Net weight: 6 lb (2.4kg)
In the Box
National Model 111 Compound Microscope
  • Vinyl Dustcover
  • Instruction Brochure
  • Limited Lifetime Warranty
  • Table of Contents
    • 1Description

    National 111 specs

    Microscope Type Compound
    Head Monocular
    Magnification 40x, 100x, 400x
    Objectives DIN standard achromatic 4x, 10x, 40xR
    Eyepiece Widefield 10x
    Light Source Built-in 115V, 20W electric illuminator
    Stage 4 3/8 x 4 3/4" / 110 x 120mm
    Overall Dimensions Height: 13.5" / 340mm
    Weight 6 lb / 2.7kg

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