The pronunciation of “calibration fee” is [ˌkælɪˈbreɪʃn fiː]. “calibration” is pronounced with stress on the second syllable. The “a” in “calibration” is pronounced as “æ”. The “i” in “calibration” is pronounced as “ɪ”. The “fee” is a simple word pronounced as “fiː”. When saying “calibration fee”, make sure to enunciate each syllable clearly for better understanding.