text: **OPERATION (cont.)**
  
  **Model AY11240** **Model AY11238**
  
  7. To clearly see the outline of the 
   specimen, rotate the coarse 
   adjustment knob and lower 
   the barrel to the space limiter. 
  8. Rotate the fine adjustment knob 
   until the image is in sharp focus. 
   When using other objectives, rotate 
   the fine focus adjustment until the 
   image is in focus.  6. To clearly see the outline of the 
   specimen, rotate the coarse 
   adjustment knob and lower 
   the barrel to the space limiter. 
  7. Rotate the fine adjustment knob 
   until the image is in sharp focus. 
   When using other objectives, rotate 
   the fine focus adjustment until the 
   image is in focus. 
  
  Focus 
  Knob 
  Eyepiece 
  Vertical 
  Pole  Eyepiece 
  
  Diopter 
  Adjustment 
  
  Prism 
  Cap 
  
  Focus 
  Knob 
  
  Lens 
  Housing 
  
  Oblique 
  Illuminator 
  Illumination 
  Controls 
  Rotary 
  Case 
  
  1. To obtain the best contrast for observing, match the hole size to 
   the objective that is being used to view the specimen. 
  2. Each hole has a corresponding number from 1 to 5. 1 is the 
   smallest hole; 5 is the largest hole. 
   Use the following guidelines to match the hole number to the 
   objective that you have selected: 
   40x objective: Use #5 hole 
   10x objective: Use #4 or #3 hole 
   4x objective: Use #2 or #1 hole 
  
  Lens 
  Spring 
  Clips 
  Spring 
  Clips 
  Stage 
  Stage 
  
  **Model AY11232**