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OPTIONAL ACCESSORIES AND PARTS: 

 
#610-045 

WF15x eyepiece w/pointer 

#610-045R 

WF10x eyepiece with reticle, 10mm/100 divisions 

#800-001 

Replacement LED light 

#802-003 

Auto cut-off recharger for rechargeable LED microscope. 

#951 

 

Dustcover, 16” tall x 13”, heavy-duty vinyl with stitched seams 

#975-001   

Carrying case anodized aluminum, fabric lining, accessory pockets, Velcro straps, keyed lock. 

 

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 address and phone number printed on the front of this manual. 

 
 
 

 
 
 
 
 
 
 
 
 
 
 
 
 

(Revised 9/14/10) 

Summary of Contents for 158-LED

Page 1: ...entific Instruments Inc 11113 Landmark 35 Drive San Antonio Texas 78233 Phone 210 590 9010 Fax 210 590 1104 INSTRUCTIONS FOR MODEL 158 LED COMPOUND MICROSCOPES Copyright 11 09 04 National Optical Scientific Instrument Inc ...

Page 2: ...erpupillary adjustment grips located on both left and right side of diopter scale Mark on side of eyepiece tube for indexing diopter reading Head locking screw Arm of microscope stand Knobs controlling X and Y movement of mechanical stage Coarse focus knob Fine focus knob Power on off switch Tension adjustment collar behind focus knob on left side Rack stop adjustment screw Knurled locking screws ...

Page 3: ...son repack in the styrofoam container and then pack the styrofoam in other corrugated shipping container for optimum protection Use of the styrofoam alone will not provide adequate protection in transit and will void your warranty DESCRIPTION OF COMPONENTS 1 EYEPIECE ocular lens Lens closest to the eye magnifies the primary image formed by the objective lens One eyepiece is equipped with a pointer...

Page 4: ... into DC recharging socket located on back of microscope base Your automatic switching recharger operates on 100 to 240 volts AC 50 60 Hz Plug charger into your AC wall outlet Battery recharger is equipped with an automatic trickle charge feature the red LED indicator lamp located on recharger will be illuminated when batteries are receiving maximum charge After batteries are charged the red LED i...

Page 5: ...base limiting the light output 2 When using 4x and 10x objectives the special neutral filter must be in optical path 3 When using the higher power 40x and 100x objectives remove filter from optical path 4 To remove filter grasp filter holder knob and swing out filter holder h Changing magnification 1 Rotate revolving nosepiece to position 10x objective into optical path 2 This microscope has been ...

Page 6: ... rack stop socket set screw With fine focus adjustment at mid range focus on standard slide until sharp image is obtained Rotate rack stop set screw in clockwise direction until tight tighten locking nut b Coarse focus tension adjustment prevents the stage from drifting down from its own weight and causing the image to move out of focus This has been adjusted at the factory but over the course of ...

Page 7: ...ours so you don t have to do this exercise very often To open the illuminator field lens housing use hex wrench supplied with your microscope to loosen hex screw on side of lens housing Remove lens housing to expose LED bulb Remove bulb by grasping the plastic base of bulb and gently pulling straight up Insert new LED bulb replace lens housing and tighten hex screw to secure lens housing in place ...

Page 8: ... 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 N...

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