1. (N) All ""critical"" measuring devices have stickers on them that identify the database control number, date of last calibration, and date of expiration of calibration.2. (N) All final measurements performed to acceptance criteria listed in Applied Materials drawings, specification, and/or contracts shall be controlled as ""critical"".3. (N) All key process control measuring devices are controlled as ""critical"".4. (N) The calibration control system has a governing work instruction.5. (N) The calibration control system is periodically audited. Deviations are immediately corrected."