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User Manual for National Model 211 Compound Microscope Click to enlarge the picture
Contents of the user manual for the National Model 211 Compound Microscope
- Product category: Microscopes National
- Brand: National
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for National Microscopes
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User manual for the National Model 211 Compound Microscope contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any National product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official National user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a National product will considerably shorten its lifespan!
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Product description 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
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- 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
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- 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
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- 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
In the Box National Model 211 Compound Microscope Limited Lifetime Warranty Table of Contents
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Technical parametersNational 211 Specs | Microscope Type | Compound | | Magnification | 40x, 100x, 400x | | Objectives | 4x, 10x, 40xR | | Eyepiece | Widefield 10x/18mm | | Light Source | LED illumination | | Overall Dimensions | Height: 15" / 380mm | | Weight | 10 lb / 4.6kg |
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