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9.  STAGE CLIPS: Two locked-on clips hold specimen slide inplace on stage plate. 
 
10.  STAGE PLATES: Frosted stage is generally used for viewing transparent specimen and the black and white 

stage plate for viewing opaque specimens. 

 
11.  STAGE PLATE LOCKING SET SCREW: Locks 80mm stage plate into recesses of microscope base. 
 
12.  HEAD: Viewing head with 45 degree inclined eyepieces. 
 
13.  FOCUSING KNOBS: Coarse focusing knobs located on each side of arm moves head up or down to bring 

specimen into focus. 

 
14.  TENSION ADJUSTMENT COLLAR: Used to adjust tension of focusing mechanism. 
 
15.  SELECTOR SWITCHES: Individual switches allow user to select between incidental (top lighting) or 

transmitted (bottom lighting) or both. 

 

ASSEMBLY 

 

 
1.  Eyepieces: 
 

A.  Microscope is shipped with eyepieces already installed.  Eyepieces will turn freely, but locking set screws 

prevent removal. 

 

a)  If you need to remove eyepieces for any reason, observe small Phillips head locking screws located 

just below top edge of both left and right eyepiece tube.  Using a small jewelers type Phillips 
screwdriver, loosen set screws just enough to permit removal of eyepieces. 

 

b)  Note that locking the eyepieces into place is not necessary for the operation of your microscope, but 

will 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 plates.  The frosted glass plate is used when viewing 

transparent specimen slides or for viewing some specimen thin enough through which light can pass 
(insect wings, etc.)  The plastic black/white contrast plate can be used when viewing opaque objects or 
for dissecting.  Choose side of plate providing best contrast with specimen.  

 

C.  There are three rocker type light controls located on top surface of microscope base. 

 
 

 

MAIN  =   Turns power on and off 

 

 

“I” 

=   Turns incidental light on (top illumination) 

 

 

“T” 

=   Turns transmitted light on (substage illumination) 

 

NOTE:  Use transmitted illumination only with frosted glass stage plate in place.  HEAT GENERATED IN 
BASE FROM BOTTOM LIGHT WILL WARP OR DAMAGE THE PLASTIC BLACK/WHITE PLATE.  
SUCH DAMAGE WILL NOT BE COVERED BY WARRANTY. 

 

Remove frosted stage plate by loosening locking set screw located on front of base with supplied “L” 
wrench.  Insert daylight blue filter into machined groove provided in center of base.  Install frosted glass 
stage plate with smooth side facing up.  Tighten locking set screw. 

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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