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OPTIONAL ACCESSORIES AND PARTS: 

 
#600-425 

Eyepiece shields, rubber, pair 

#605-425 

WF5X Eyepieces 

#610-425 

WF10X Eyepieces 

#615-425 

WF15X Eyepieces 

#620-425 

WF20X Eyepieces 

#705-425 

Auxiliary 0.5x objective lens  

#715-425 

Auxiliary 1.5x objective lens 

#800-425 

LED bulb transmitted illuminator. 5500K color temperature, 3 watt Lambertain 

#907 

 

Fluorescent ring light illumination, 110v, 12w (Requires 931-425 adaptor to mount to 425/425T microscope) 

#930-425 

SLR adaptor with 2.0 photo lens 

#930-426 

Video “C” mount focusable camera adaptor with 0.45x lens for 1/3” CCD 

#931-425 

Ring light adaptor used to adapt #907 Fluorescent ring light illuminator to 425/425T microscopes. 

#940-425  

Frosted glass stage plate, 95mm 

#941-425 

Black/White plastic contrast plate, 95mm 

#965-425-05 

Eyepiece reticle, 5mm scale/100, 1 division 0.05mm, 24.95mm diameter. 

#965-425-10 

Eyepiece reticle, 10mm scale/100, 1 division 0.1mm, 24.95mm diameter 

 

 

LIMITED LIFETIME WARRANTY 

 

National warrants this microscope to be free from defects in material and workmanship under normal use and service for the life of the 
instrument. This limited lifetime warranty excludes all internal electrical components which are only warranted for a period of one year.  
The warranty does not cover damage resulting from abuse or misuse, repairs or alterations performed by other than authorized repair 
technicians, or damage occurring in transit. The warranty does not cover bulbs, power supplies, rechargers, batteries, fuses, cords, or 
add-on accessories such as mechanical specimen holders that are not built into the microscope stage as an integral part of original 
manufacture. Warranty does not cover lenses that have become inoperable due to excessive dirtiness as a result of misuse or lack of 
normal maintenance.  
 
Any cameras and software supplied with this microscope are warranted from date of purchase as follows:  
 

Camera, 1-year limited warranty:  

Manufacturer warrants camera to be free from defects in material and workmanship 

under normal use and service for 1 year from date of purchase.  It does not cover damage resulting from abuse or misuse, 
repairs or alterations performed by other than the manufacturer, or damage occurring in transit. 
 

Software, 90-day limited warranty:

  Manufacturer warrants software to be free from defects in material and workmanship 

under normal use and service for 90 days from date of purchase. 

 
Other than set forth above, National hereby disclaims all warranties, express or implied, of fitness for a particular purpose. 
 
While it is not necessary to register your purchase of a microscope, any camera or software must be registered by completing and 
mailing the warranty registration card enclosed with such product.  
 
For warranty service, instrument should be well packed to avoid damage in transit, accompanied by a description of the difficulty and 
return instructions, and shipped postage prepaid to National at the address below. National will repair or replace at no charge and 
return postage prepaid. 

For customers living outside the United States, National will provide standard warranty service.  However, 

inbound & outbound shipping cost is the responsibility of the consumer. 

  If failure was caused by misuse, alterations, accident or 

abnormal conditions of operation, an estimate for repairs will be submitted for approval prior to work being performed. 
 
This warranty gives you specific legal rights, and you may also have other rights that vary from state to state. If you have questions 
concerning this product or warranty, contact the dealer from which it was purchased. You may also contact National at the following 
address and ask for warranty assistance. 
 
If you have questions concerning this product or warranty, contact dealer from which it was purchased.  Or contact National, asking for 
warranty assistance. 

 

Summary of Contents for 425 Series

Page 1: ...ts Inc 6508 Tri County Parkway Schertz Texas 78154 Phone 210 590 9010 Fax 210 590 1104 INSTRUCTIONS FOR 425 425T SERIES STEREOSCOPIC ZOOM MICROSCOPES Copyright 5 26 09 National Optical Scientific Instrument Inc A Member of the Motic Group ...

Page 2: ...y Locking Support Collar Post Intensity Control for both illuminators Incidental top and Transmitted bottom Light Switches Knurled Diopter Adjustment on both eyepieces Head Head Locking Screw Knurled Cover Ring Incidental Illuminator Top Light Beam Adjustment Screw Main Power Switch Stage Clips Stage Plate Base Power Jack Illustrated Model 425T 440PLL 10 Prism Housing Trinocular Port ...

Page 3: ... service If it becomes necessary to ship the microscope for any reason pack it in the original boxes and then pack these boxes in outer corrugated shipping container for optimum protection Use of the inadequate packing will not provide adequate protection in transit and will void your warranty ASSEMBLY Place the microscope post stand on a flat stable and clean surface 1 Mounting the focusing assem...

Page 4: ...ation markings are located on right knob is positioned at the black index dot on head Lower magnifications have larger fields of view making it easier to position and locate area to be viewed B Place a flat object or specimen slide cover glass up on stage plate C Position focusing knobs in the center of focusing range D The height of viewing head can be adjusted up or down on the post in order to ...

Page 5: ... Accepts Reticle 24 95mm O D Interpupillary Distance 49 74mm 75 7 5X 30 7 3 8X 61 3 11 3X 20 4mm 1X 10X 23mm 5X 46mm 15X 15 3mm 2X 20X 11 5mm 10X 23mm 30X 7 7mm 3X 30X 7 7mm 15X 15 3mm 45X 5 1mm 4X 40X 5 8mm 20X 11 5mm 60X 3 8mm 5X 50X 4 6mm 25X 9 2mm 75X 3 1mm WF15X Field No 17 Optional 615 425 Does Not Accept Reticle Interpupillary Distance 47 72mm 75X 11 3 22 7mm 5 6X 45 3 16 9X 15 1mm 1X 15X 1...

Page 6: ...ra onto threads of video adaptor Locate knurled screw c located at the front of trinocular port on head Turn knurled locking screw in a counter clockwise direction to loosen screw and to permit removal of black plastic disk covering trinocular port Insert video adaptor tube into trinocular port If adapter does not insert easily further loosen knurled screws at side of port until adaptor tube drops...

Page 7: ... illuminator base to the microscope pole base B Carefully unplug the LED top light connector attached to socket marked LED from circuit board C Carefully unplug the LED bottom light connector attached to socket marked LED from circuit board D Using a 5 5mm hex nut driver remove two nuts from the 3mm screws securing light bracket to black base tray E Using a Phillips screw driver remove three each ...

Page 8: ...this microscope are warranted from date of purchase as follows Camera 1 year limited warranty Manufacturer warrants camera to be free from defects in material and workmanship under normal use and service for 1 year from date of purchase It does not cover damage resulting from abuse or misuse repairs or alterations performed by other than the manufacturer or damage occurring in transit Software 90 ...

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