Copyright 2004 Northrop Grumman Corporation
Newport News Procedure Q-1022 requires that all 3D Measurement IM&TE be calibrated and maintain a minimum of a 4:1 accuracy ratio, traceable to the NIST.
Vendor calibrations must adhere to the same 4:1 ratio.
Uncertainty calculations are used to justify calibration ratios less than 4:1.
All 3D Measurement Equipment must display the appropriate labels and tags that indicate their current calibration status.