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User Manual for National 420AHF-15 1-4x Stereo Zoom Microscope Click to enlarge the picture
Contents of the user manual for the National 420AHF-15 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 420AHF-15 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 420AHF-15 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. The 420AHF stereo microscope has a paired 15x eyepiece delivering a 15x to 60x continuous magnification range. The achromatic objective lens system is parfocalled and parcentered throughout the zoom range to keep the specimen in focus and centered while zooming in/out.The 420AHF can illuminate the specimen from above using a 15W halogen light and/or from below the stage using a 5W fluorescent light; each light source is activated separately by base-mounted On/Off switches. To help optimize the brightness and contrast of the specimen, the top (incidental) light beam is intensity and direction adjustable.A user-friendly design complements the range of features that make the 420AHF stereo zoom microscope a welcome addition to labs and classrooms. The viewing head accommodates specimen heights up to 45mm / 1.8" 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 reticle holder/retainer provide the 420 series with the flexibility needed to create a customized viewing experience. - Optical System
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- Paired 15x inclined eyepiece
- 1-4x achromatic, parfocalled, parcentered objective system
- 15x to 60x magnification range
- 80mm / 3.1" working distance, 45mm / 1.8" maximum specimen height
- 55-75mm / 2.2-3" interpupillary distance
- Individual diopter adjustments
- Accepts 23mm eyepiece reticle
- Focusing
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- Rack and pinion focus system
- Slip clutch prevents over-turning
- Tension adjustment prevents focus drift
- Lighting
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- Incidental (top) 15 watt halogen illumination with beam intensity/direction controls
- Transmitted (bottom) 5 watt fluorescent illumination with blue filter
- Dual base-mounted On/Off switches
- Grounded power cord
- Construction Details
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- 80mm frosted glass stage plate, 80mm reversible black/white contrast plate
- Locked on metal stage clips
- 360° rotating viewing head
- Fixed-arm stand
- Cast metal frame
- Grey enamel finish
- 13.4" (34 cm) height
- 11.7 lb (5.3 kg) weight
In the Box National 420AHF-15 1-4x Stereo Zoom Microscope Eyeshields Dustcover Limited Lifetime Warranty (Excluding Bulb) Table of Contents
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Technical parametersNational 420-420AHF-15 Specs | Microscope Type | Stereo | | Eyepiece | 15.0x | | Objective(s) | 1.0 - 4.0x | | Head | Inclined | | Light Source | 12 V, 15 W halogen (incidental), 110 V, 5 W fluorescent (transmitted) | | Light Control | 4-position On/Off | | Stage | 80 mm frosted stage plate, 80 mm reversible black/white contrast plate | | Interpupillary Adjustment | 2.2 - 3" (55 - 75 mm) | | Maximum Specimen Height | 1.8" (45 mm) | | Maximum Height | 13.4" (34 cm) | | Weight | 11.7 lb (5.3 kg) |
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