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User Manual for National 420-1105-20 1-4x Stereo Zoom Microscope Click to enlarge the picture
Contents of the user manual for the National 420-1105-20 1-4x Stereo Zoom 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 420-1105-20 1-4x Stereo Zoom 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 420-1105-20 1-4x Stereo Zoom Microscope from National Optical is a stereoscopic zoom microscope designed for laboratories and university students. The stereo (two) eyepiece configuration is preferred by most researchers and students because of the superior depth of field and comfort compared to monocular microscopes. This model of the 420 stereo microscope has a paired 20x eyepiece delivering a 20x to 80x continuous magnification range. The achromatic 1-4x objective lens system is parfocalled and parcentered throughout the zoom range to keep the specimen in focus and centered while zooming in/out. Optional eyepieces and auxiliary objectives expand the magnification range and working distances of the optical system.A user-friendly design complements the range of features that make the 420 stereo zoom microscope a welcome addition to labs and classrooms. The 420-1105 has a universal stand with counterbalanced boom arm that enables a range of viewing positions, and is ideal for specimens that are too large or abnormally-shaped for fixed arm microscopes. The viewing head accommodates specimen heights up to 437mm / 17.2" and is capable of 360° rotation to help share the stereo eyepiece among colleagues and students without moving the microscope. The rack and pinion system has dual focus dials and includes a slip clutch mechanism to prevent mishandling. An adjustable interpupillary distance, individually adjustable diopter correction, and height-adjustable viewing head provide the 420 series with the flexibility needed to create a customized viewing experience. - Optical System
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- Paired 20x inclined eyepiece
- 1-4x achromatic, parcentered, and parfocalled objective system
- 20x to 80x magnification range
- 80mm / 3.1" working distance, 437mm / 17.2" maximum specimen height
- 52-76mm / 2-3" interpupillary distance
- Individual diopter adjustments
- Focusing
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- Rack and pinion focus system
- Slip clutch prevents over-turning
- Tension adjustment prevents focus drift
- Dual focusing dials
- Construction Details
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- Universal stand with counterbalanced boom arm
- Post-mounted viewing head with locking collar
- Pivoting boom arm with locking collar
- 360° rotating viewing head
- Cast metal frame
- Grey enamel finish
- 13.2" (33.5 cm) vertical post length
- 15.4" (39 cm) maximum height
- 40 lb (18.1 kg) weight with counterweight
In the Box National 420-1105-20 1-4x Stereo Zoom Microscope Eyeshields Dustcover Limited Lifetime Warranty (Excluding Bulb) Table of Contents
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Technical parametersNational 420-1105-20 Specs | Microscope Type | Stereo | | Eyepiece | 20.0x | | Objective(s) | 1.0 - 4.0x | | Head | Inclined | | Light Source | No built-in illumination | | Light Control | Not applicable | | Stage | Not applicable | | Interpupillary Adjustment | 2 - 3" (52 - 76 mm) | | Maximum Specimen Height | 17.2" (437 mm) | | Maximum Height | 15.4" (39 cm) | | Weight | 40 lb (18.1 kg) |
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