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Stereoscopic microscopes are used for viewing 3-dimensional objects, inspection or assembly of small parts, 
and for dissection of biological specimen.  They provide an upright, unreversed image which permits easy 
manipulation of the object being viewed while looking through the microscope.  They are designed for viewing 
solid objects at low magnification, but they will also permit viewing of some transparent specimen slides. 
 
For optimum viewing satisfaction, follow these simple procedures.  Nomenclature used to describe components 
and controls can be identified by referring to the diagram at left. 
 

UNPACKING 
 

1.  Your microscope is packed with the following components, all of which have been checked at the factory.  

Carefully remove all components and check against this list.  Make certain not to touch any of the lens 
surfaces while handling the microscope.  Dust, dirt or fingerprints can damage the delicate lens surfaces or 
adversely affect image quality.  Retain Styrofoam container in case microscope must be transported or 
returned to factory for any reason. 

 

A.  Microscope, with pair of eyepieces. 
 
B.  Instruction manual. 
 
C.  Rubber eyecups (pair). 
 
D.  Two 80mm O.D. stage plates: plastic black/white & frosted glass (one installed). 
 
E.  Frosted 35.6mm blue filter. 
 
F.  “L” hex wrench (for changing stage plate). 
 
G.  Dustcover. 

 
2.  Examine packing material before you discard it.  Retain the styrofoam container in case you need to 

transport, store, or return the microscope for service.  If it becomes necessary to ship the microscope for any 
reason, pack it in the styrofoam container, and then pack the styrofoam in another 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: Group of lenses closest to the eye, they magnify image formed by the objectives. 
 
2.  RUBBER EYEPIECE SHIELDS: These help block out undesired light reflections, and to position your eyes at 

the proper point above the eyepieces. 

 
3.  DIOPTER: Knurled diopter adjustment permits user to adjust for differences in eyesight between left and 

right eyes. 

 
4.  EYEPIECE TUBE HOUSING: Permits each user to adjust spacing between eyepieces in order to 

accommodate distance between their eyes.  Adjusts interpupillary distance from 55mm to 75mm. 

 
5.  OBJECTIVE TURRET: Changes objective magnification by rotating objective turret 90 degrees. 
 
6.  LENS COVER: Glass protective cover protects objective lenses from damage.  Glass cover can be removed 

so that model no. 932-409 ring-light adapter can be installed. 

 
7.  LIGHT SHADE: Helps block out undesired light from incidental illuminator. 
 
8.  MAIN POWER SWITCH: Main power switch supplies power to incidental and transmitted control switches. 

 

 

Summary of Contents for 409TBL Binocular Stereo

Page 1: ... Tri County Parkway Schertz Texas 78154 Phone 210 590 9010 Fax 210 590 1104 INSTRUCTIONS FOR STEREOSCOPIC MICROSCOPES 409TBL Binocular Stereo 410TBL Binocular Stereo 411TBL Binocular Stereo Copyright 1 2 01 National Optical Scientific Instruments Inc ...

Page 2: ... Stage plate locking screw Stage plate Fuse Top light incidental illumination Arm Focusing knob tension adjustment collar behind knob on this side Head Diopter adjustment Eyepiece locking screw Main power switch Stage clips Rubber eyepiece shield Slotted head retaining screw located on side Glass objective lens protector ...

Page 3: ...hanging stage plate G Dustcover 2 Examine packing material before you discard it Retain the styrofoam container in case you need to transport store or return the microscope for service If it becomes necessary to ship the microscope for any reason pack it in the styrofoam container and then pack the styrofoam in another corrugated shipping container for optimum protection Use of the styrofoam alone...

Page 4: ...l help to secure them against loss B Install rubber eyepiece shields by slipping over top of eyepieces flared side outward OPERATION 1 ILLUMINATION A Before operating microscope make certain that the main voltage of your microscope corresponds to the voltage of your power outlet either 120v or 220v Insert microscope plug into matching voltage outlet B The microscope is furnished with two stage pla...

Page 5: ...en slide cover slip up on center of stage plate C Turn focusing knobs until object being viewed is in focus D Adjust diopter for difference in eyesight Look into right eyepiece with right eye Turn focusing knobs until sharp image is obtained in right side of microscope Look into left eyepiece with left eye Adjust sharpness of image by turning knurled diopter adjustment located on left eyepiece tub...

Page 6: ...in a small amount of distilled water or Windex to clean all foreign material from glass surface 2 MECHANICAL MAINTENANCE The only mechanical adjustment the microscope might require is the tension of the focusing mechanism This has been adjusted at the factory but over the course of time it may loosen and cause the head of the microscope to slip downward on the focusing block The tension adjustment...

Page 7: ...ower cord not connected Plug into outlet Lamp burned out Replace lamp Fuse blown Replace fuse Image does not remain in focus Head of microscope drops from its own weight Adjust tension control Poor resolution image not sharp Clear glass objective lens protector dirty Clean glass protector Eyepiece lens dirty Clean eyepiece lenses Spots in field of view Eyepiece lens dirty Clean eyepiece lenses Spo...

Page 8: ...o 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 c...

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