National Model 211 Compound Microscope

BH #NACM211 • MFR #211
National
National Model 211 Compound Microscope
Key Features
  • Widefield 10x Eyepiece with Pointer
  • 45° Inclined Monocular Viewing Head
  • 360° Head Rotation
  • 4x, 10x, 40xR Objectives
The National Optical & Scientific Instruments Model 211 Compound Microscope is a cost-effective device designed for use in educational settings. Featuring cool LED illumination, a 360° rotating head, and rugged construction the 211 is both easy for kids to use and strong enough to withstand daily wear and tear.

The microscope's widefield 10x eyepiece sits within a 45° angled monocular viewing tube. This tube is positioned on the aforementioned 360° rotating head. The tube of course leads to DIN standard objectives at 4x, 10x, and 40xR. These objectives supply the viewer with 40x, 100x, and 400x magnification.

Helping to provide a clear and accurate view of specimens it the 211's built-in LED illumination. Delivering more light than a standard 20 watt bulb, the LED light virtually gives off no heat and boasts a 50,000 hour bulb life. A base mounted on/off switch allows for easy operation.

The 211 also ensures a long life for the microscope itself thanks to built-in safety features. The slip clutch prevents damage to the focus system caused by over focusing. A tension adjustment prevents stage drift. And the safety rack stop prevents damage to both the objective lenses and the specimen slides. Of course the microscope also comes with a limited lifetime warranty for peace of mind.

Special Order
Expected availability: 7-10 business days
$379.95

National Model 211 Compound Microscope

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National 211 Overview

  • 1Description
  • 2Optical System
  • 3Illumination
  • 4Focusing
  • 5Stage

The National Optical & Scientific Instruments Model 211 Compound Microscope is a cost-effective device designed for use in educational settings. Featuring cool LED illumination, a 360° rotating head, and rugged construction the 211 is both easy for kids to use and strong enough to withstand daily wear and tear.

The microscope's widefield 10x eyepiece sits within a 45° angled monocular viewing tube. This tube is positioned on the aforementioned 360° rotating head. The tube of course leads to DIN standard objectives at 4x, 10x, and 40xR. These objectives supply the viewer with 40x, 100x, and 400x magnification.

Helping to provide a clear and accurate view of specimens it the 211's built-in LED illumination. Delivering more light than a standard 20 watt bulb, the LED light virtually gives off no heat and boasts a 50,000 hour bulb life. A base mounted on/off switch allows for easy operation.

The 211 also ensures a long life for the microscope itself thanks to built-in safety features. The slip clutch prevents damage to the focus system caused by over focusing. A tension adjustment prevents stage drift. And the safety rack stop prevents damage to both the objective lenses and the specimen slides. Of course the microscope also comes with a limited lifetime warranty for peace of mind.

Optical System

  • Widefield 10x eyepiece with pointer. Accepts optional #965-160 eyepiece reticle
  • 45° inclined monocular viewing head rotates 360° for easy sharing by more than one student
  • DIN standard 4x (0.10 N.A.), 10x (0.25 N.A.) and 40xR (0.65 N.A.) objectives are supplied for 40x, 100x and 400x magnification. All are achromatic, parfocalled, parcentered and color-coded
  • 4-hole objective turret, reverse position, ball-bearing mounted for smooth, precise changes in magnification

Illumination

  • Built-in corded LED illumination, delivers greater light and longer life than standard 20-watt tungsten bulb. Virtually no base heat. 50,000 hour rated bulb
  • Base mounted on/off switch, heavy-duty 3-wire grounded electrical system and plug
  • 0.5A time delay fuse

Focusing

  • Separate low position coarse and fine focusing controls
  • Slip clutch prevents damage to focusing system
  • Tension adjustment eliminates stage drift
  • Safety rack stop prevents damage to slides and objective lenses

Stage

5.25 x 5.25" / 135 x 135mm stage, mechanical stage with low-position coaxial x-y controls

National 211 Specs

Microscope TypeCompound
Head45° Inclined, 360° Rotating Monocular
Nosepiece3-Position Nosepiece
Imaging
Optical Magnification40x, 100x, 400x
Objective4x, 10x, 40x
Eyepiece10x Wide Field
FocusingCoarse, Fine
Illumination
Illumination TypeLED
DimmerYes
General
Power SourceAC Adapter
AC Input Power120 VAC, 60 Hz
Dimensions15" / 380 mm
Weight10 lb / 4.6 kg
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