{
  "title": "Machine tool data for AI calibration-axis context",
  "source_page": "https://fiund.com/industries/machine-tool-calibration-axis-context-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "A calibrated axis does not establish every axis",
    "context": "Fictional machine records report only coverage labels, without machine settings or calibration procedures.",
    "records": [
      [
        "1",
        "Axis glossary",
        "Machine M7: U longitudinal, V transverse, W vertical."
      ],
      [
        "2",
        "Report R1",
        "M7 U and W measured; V absent."
      ],
      [
        "3",
        "Report R2",
        "Machine M8 V measured."
      ]
    ],
    "question": "Is transverse coverage established for M7?",
    "answer": "No. Record 1 maps transverse to V, and R1 in record 2 omits that axis for M7. R2 supplies a V record for a different machine. The coverage table should show U and W documented, V missing for M7.",
    "failureModes": [
      "Treating calibration coverage as all axes by default",
      "Joining a missing axis to another machine"
    ],
    "fields": [
      [
        "machine_serial",
        "Pins the exact unit"
      ],
      [
        "axis_glossary_key",
        "Resolves human-readable axis names"
      ],
      [
        "measurement_coverage",
        "Lists tested axes explicitly"
      ]
    ],
    "holdout": "Use a revision that renames V but keeps the physical axis; require a revision-aware alias mapping.",
    "boundary": "No actual machine calibration, tolerances, customer equipment reports or certification."
  }
}