A master tool provides a traceable reference. When an automated machine or operator tool is calibrated against the master, the entire production process can trace its accuracy back to a recognized standard [2]. This is critical for auditing. 2. Consistency Across Multiple Lines
While master data is digital, master physical tools are the precise, physical artifacts used for measurement and setup. They are the "golden samples" against which everything else is compared. Their integrity is protected by a three-level hierarchy in metrology:
The is fundamentally a reference point.
The old paper-based "master tool standard ver" logbook is dying. Industry 4.0 introduces new approaches.
