MAINTENANCE OF THE KERATOMETER


The most common maintenance that must be 
done is replacement of the bulb.  The bulb is 
located in the housing under the front of the 
                                                 main body of the 
                                                 instrument.  







                                          
                                         
                                                    To remove the housing, turn the main body   
                                                    of the instrument to the side and loosen the  
                                                    two thumb screws that hold it in place.  Hold
                                                    the housing and remove the bulb.  Replace 
                                                    the bulb, put the housing back and secure it
                                                    with the thumb screws.