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Text File  |  1997-10-28  |  506b  |  19 lines
  1.                ALCON HAND HELD AUTO-KERATOMETER
  2.  
  3. Controls
  4.  
  5. 2. Handle or Ground reference setting.  If set 
  6. to ground it will automatically compensate for 
  7. the axis measurement if you turn the handle 
  8. away from vertical.  For example if you are 
  9. doing keratometry on a bedridden patient.
  10.  
  11.  
  12.  
  13.  
  14.  
  15.  
  16.  
  17.                                                             3.  The setting can be set to read 
  18.                                                                  either - cylinder or + cylinder.
  19.