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National 158-LED Instructions Manual

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Copyright © 11/09/04
National Optical & Scientific Instrument Inc.
National Optical & Scientific 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

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Summary of Contents for National 158-LED

  • Page 1 National Optical & Scientific 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 Knurled diopter rings (left & right sides) Sliding interpupillary adjustment, Widefield 10x/18 grips located on both left and right eyepiece side of diopter scale Interpupillary scale Mark on side of eyepiece tube for indexing diopter reading Viewing head of microscope Head locking screw Arm of microscope stand Revolving nosepiece...

  • Page 3: Description Of Components

    INTRODUCTION Thank you for your purchase of a National microscope. It is a precision instrument carefully checked to assure that it reaches you in good condition. It is designed for ease of operation and years of carefree use. The information in this manual probably far exceeds what you will need to know in order to operate and maintain your microscope.

  • Page 4: Operation

    ASSEMBLY Specimen holder: Rotate coarse focusing knob to move stage platform to its lowest position. Remove two knurled screws from mechanical stage platform. Place specimen holder on stage and using the two knurled locking screws, attach specimen holder to mechanical stage.
  • Page 5 Rotate coarse focusing controls until specimen comes into focus. Adjust fine focus controls until specimen is in sharp focus. Adjust diopter for possible difference in eyesight between user’s left and right eyes. If user has 20/20 vision, this adjustment should not be necessary. Using right eye, peer into the right eyepiece tube.

  • Page 6: Mechanical Maintenance

    Before having costly servicing done, or before returning to National for “warranty repair”, make certain to examine the front lens element with a magnifying glass or eye loupe for the presence of such contaminants. If a microscope is returned to National for warranty repair, and it is determined that such contaminants are the problem, this is not covered under warranty and National will submit a cost estimate for cleaning.

  • Page 7: Troubleshooting

    Replacing batteries: Your microscope includes 3 rechargeable AA nickel metal hydride batteries. These may be recharged up to 500 times, but if you observe that a recharge is providing significantly less than 40 hours of operation. It is probably time to replace to batteries.

  • Page 8: Optional Accessories And Parts

    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.

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